Monitoring my weight daily to be sure not abnormal increase. The GFR went down not because the kidney failed any more, but because there was not enough fluids in the system to wash out the creatinine. Altogether, the GFR data for the fasting and after-meal periods indicate that (1) a difference in the level of hydration induces stable differences in GFR under fasting conditions and after a meat meal, and (2) a meat meal induces a normal renal reserve—that is, a 25% increase in GFR over baseline values—only when the fasting baseline GFR is maintained in the low range by a high level of … On average, eGFR of 30 does not cause problems. Additionally, eat fewer foods that are rich in either potassium, like potatoes and bananas, or phosphorous, like milk and nuts, because weakened or damaged kidneys can have trouble processing those chemical elements. Seems more and more doctors seem to have little faith in egfr. Always speak to your doctor before acting and in cases of emergency seek Yes it functions with good numbers because of the water, but this is not different than for example taking medicine for an irregular heartbeat. Some studies show that fasting during pregnancy does not affect the fetus or the mother. © Patient Platform Limited. To increase your GFR, start by eating less meat, since animal products contain creatine and creatinine that go along with low GFR. Your doctor may suggest further testing (blood, urine, or imaging tests). Glomerular Filtration Rate (GFR) is considered the best measure of kidney function, assessing the kidney's ability to filter substances from blood plasma. The implication is that these equations provide similar results. This, the researchers note, could lead to chronic kidney disease being misstaged by impacting the results of the eGFR. to determine the dosage of a number of chemotherapeutic drugs prescribed to Oncology patients and also during live donor work-up to determine their suitability prior to kidney donation. A very slight tenth of a number increase in creatinine, caused a 10% drop in GFR. This requires that I drink 64 to 70 ounces of water per day. After all, fasting may not be beneficial during pregnancy. I don't worry anymore. So set your mind at ease, trust in your Dr and if not happy, seek a second opinion.. He is a nephrologist after all. Ensure you see them monthly or at the very least, second monthly. No one knows what tomorrow will bring. The bottom line, we each need to do what our nephrologists tell us to do--our treatment plans are all individual. My interest and surprise was just how 12 hours without water could make such a difference but also how screwed up the entire gfr thing is. Some can not handle it. Isotope plasma clearance techniques (i.e. GFR from 45 to 37 and this was within a few days. This will be my life as long as I live. Creatinine from 1.16 to 1.37 to 1.44. Patient aims to help the world proactively manage its healthcare, supplying evidence-based information on a wide range of medical and health topics to patients and health professionals. On the fasting blood work, just 3-4 days later it was 1.8. Fasting decreased α-tocopherol and increased γ-tocopherol, no significant changes were found after RD. eGFR. It calculates how much blood filters through the kidneys each minute. All that showed up on the test was egfr 59 and low ferritin. My creatinine read around 1200 and now sits at 130. Mild dehydration normally does not affect GFR. Posted The cancer from the other kidney may be secretly growing in my body someplace else, this kidney may fail, or as my cancer doctor says "or you may be hit by a bus", so who knows. Thanks Marj. Constipation. Also my creatinine level was 1.95 normal range is 0.50-1.30. Even so, the idea of not eating or drinking, even for a small amount of time, can seem daunting. Here the doctors measure our creatinine differently. I notice many who participate in this forum, although not all, have been told to drink lots of water for their kidneys. Rick, this is a great explanation! Patient does not provide medical advice, diagnosis or treatment. According to MedlinePlus, a service of the U.S. National Library of Medicine, GFR is a test used to assess kidney function. It grows continuously. All other metrics are in the normal range. However, before fasting with kidney disease or any other medical condition please consult your physician. I was hospitalized for a twisted small intestine. If fasting is found to cause a significant systematic difference in GFR measurement, protocol changes will be made i.e., steps introduced to ensure the patient is adequately hydrated prior to … It is our experience that patients referred to the Nuclear Medicine department for GFR assessment, have other hospital appointments on the same day, some of which require them to go nil-by-mouth from the evening before their GFR test. My kidney doctor too says we watch the creatinine level. By continuing to browse the site you are agreeing to our use of cookies. If GFR goes down, it’s a bad sign. The last three years my creatinine level is slightly high and eGFRis slightly low. You may also be asked not to eat any cooked meat the night before the test. Water helps the waste and toxins to get flush out from one’s body. The Health Research Authority website uses essential cookies. Let hunger dictate what you eat during this period. I am a 76 year-old male. The results of Isotopic GFR assessment are used in key patient management decisions, e.g. But definitely seek another opinion if you feel your not being listened to, as we all know what our own body's normal to abnormal! It actually makes your kidney permanently enlarge. The GFR test is sometimes known as the estimated GFR or eGFR test because several calculations are necessary to arrive at your final GFR. There are no quick miracles to regaining health in my 66 years that i have found. At present, it is not fully understood how hydration status affects GFR measurement results as few studies have investigated this relationship. BUN/Creatinine ratio is 10. After RD, the parameters were comparable to baseline values. We are still testing the new HRA website to ensure it meets your needs. So you have a long way to go yet before you start to worry. Immediately after operation my egfr was 35 for a while. I just wondered if a non fasting test would likely be different, doesn't sound like it affects it too much though. Therefore, patients presenting for isotope GFR assessment may be suffering from varying degrees of dehydration due to their fast. My Nephrologist said these levels go up and down, sometimes the lab is not so accurate. So, if your GFR level is high, then consult an Ayurvedachadrya who can increase GFR levels with Ayurveda. I knew I had CKD but did not know why before the CT scan. Such an effect simply from water consumption. Recent food consumption raises the Low-Density Lipoproteins- LDL level and triggers the level of Triglycerides in the blood; and this how not fasting affects … and Privacy Policy and steps will be taken to remove posts identified But the big benefit of drinking the water is not just the kidney and the numbers. Such an effect simply from water consumption. Kidneys are amazing and I plan to take care of mine by eating right, drinking enough and keeping active. Registered in England and Wales. Results: WF increased uric acid and creatinine and decreased glomerular filtration rate. To find GFR, physicians normally obtain the number by using the equation: GFR=140-(your age). It is often ordered as part of … Before the transplant and when I was on dialysis doctors tended to dwell on the egfr reading and discounting the fact my creatinine levels read around 1200!! as being in breach of those terms. not moderated or reviewed by doctors and so you should not rely on opinions or advice given by other users in For a person with one functioning kidney transplanted this is good. Fasting is not always necessary before a blood test, but when it is, it is only for a short time. those using radioactive tracers) are currently viewed as a reference method for the measurement of GFR. Fasting for long hours before the sample collection provides the most accurate results in terms of knowing your cholesterol levels. Thanks. It's not worth it to get all tangled up in the minutia of blood work. A similar thing happened to me before I had my transplant. Microalbumin is 3.0. It is therefore important to make this measurement as accurate and precise as possible. Measuring my feet and ankles. GFR is the sum of filtration of all the fluids passing through kidney’s filters called nephrons. Then this past Friday I had blood work done by my kidney doctor. It is amazing that just movement from .7 to .8 can make a huge different in the egfr number. What is GFR and how can we calculate it? Had an interesting experience this past week regarding my blood work. In the MDRD study data used to generate the eGFR equations, samples were taken from predominantly fasting subjects (AS Levey, personal communication). Our clinical information is certified to meet NHS England's Information Standard.Read more. We watched closely if I was retaining any of the increase fluid. Both of these doctors are NOT fans of the egfr methodology as it does not take into account the uniqueness of height and weight, nor the reason you are CKD (is it because you only have one kidney, or is it really kidney failure, do you have diabetes or other influencing factors), but it is the only test currently available and "normally" used. Renal Failure - Went to my PDr Monday and she ran my kidney function for me in three months my GFR?My GFR dropped from 39 to 27 in just three months. I suppose the major exception to that would be people whose kidneys aren't working well enough to clear fluid; they have trouble retaining fluids so may need to adhere to fluid restrictions. Lipid peroxidation (TBARS) decreased and maintained stable after RD. Fasting blood glucose measures the amount of glucose (sugar) in your blood to test for diabetes or prediabetes. The numbers are actually how the kidney is functioning. 2 years ago, Assessing impact of fasting on kidney function measurement (GFR), Leeds Teaching Hospitals NHS Foundation Trust. My urologist and my oncologist tell me ignore it. I am 50. All rights reserved. Without the medicine for 12 or 24 hours, it will not beat properly. 2 But you may want to avoid IF during pregnancy. If it gets large enough (grapefruit size) it may start some pain and we will deal with it then. Yes too you are right that it is not for all. Dr Fung who i follow closely does Not suggest fasting without a doctor monitoring your vitals if you have any health issues. Can Dehydration Cause Low GFR Results – Dehydration Affect Kidney Function Water is essential for life and we all get recommended for the consumption of enough fluid in a day. We were also similar with the cysts. What caused the sudden drop? For instance, if you are otherwise healthy, and age 30 years old, your GFR should be approximate, 110 ml/min. So it sounds right that if you fast for the tests your numbers will go up. Yorkshire & The Humber - Leeds East Research Ethics Committee. She further supported this by showing how all tests with the "medicine" (water) have shown a constant improvement month to month, because it causes the "internals" of the kidney to actually expand be able to handle more workload. old, 134 lbs., good BP, and I'm super active, walking, swimming living a normal life. You cannot eat or drink for 3 days with an NG tube into your stomach to drain the sludge. To determine GFR, a lab specialist first tests the creatinine level in a blood sample. The resultant blood work, urine test is not cheating the system. Warning: Fasting in this study provided some interesting results. respect of any healthcare matters. Anyone can "fudge" their numbers by drinking a lot of water before testing. My cholesterol and blood pressure are controlled with medications and test normal. Both of these numbers should just be considered as normal. She put me on Cipro for the infection. Requesting people to fast prior to having eGFR and serum creatinine tests is one solution, but “from a clinical perspective, there will be a risk of hypoglycemia in insulin-treated patients,” noted study author Sunil Nair, MRCP. I am so glad that I had the two tests, with and without fasting, so close together. We want the forums to be a useful resource for our users but it is important to remember that the forums are If your eGFR was below 60, talk to your doctor as soon as you can! But what wonderful improvement in renal function for you!! If … then went to 38, 39 range. I have heard the same from my nephrologist. Stay up to date with latest news, updates to regulations and upcoming learning events. per minute. 5 users are following. She had me drinking 70 ounces or more of water every day for a month before this test. Keeping reasonably hydrated will help your kidneys, about 2 - 3 liters per day will be OK. Our laboratory testing is not that precise. I have kidney cysts (many) and he told me it will change from time to time, don't worry about it. OBJECTIVE —Hyperglycemia increases glomerular filtration rate (GFR), but the influence of HbA1c (A1C) on GFR and GFR’s prediction by recommended equations remains to be determined. Then the following Tuesday my primary care doctor wanted to check my Cholesterol level and for this blood test I fasted for about 13 hours. There is also the possibility we can live a normal life. My mothers "usual" was 1200! appropriate medical assistance immediately. ADVERTISEMENT 4.50K viewsSeptember 15, 2011 0 Cindy September 15, 2011 0 Comments I exercise 5 days a week for 60 to 75 minutes (spinning class and then resistance training). Moderate or severe dehydration affects the kidney function negatively and can result in a lower GFR test result. The fudging is NOT drinking. And, Ayurvedacharya does not use any surgical treatments to cure your failed or diseased kidney. In clinical practice, however, samples for serum creatinine concentration and eGFR are generally used in situations where the patient’s recent dietary intake is not considered. Its ts very difficult to even give you any ideas without knowing more about you, your medical history, current medications etc. Normal for a person with both functioning kidneys is between .7 and 1.3. Haha, no nothing like that! The positive effect of complete water fasting was the reduction of body weight, oxidative stress and blood pressure. If fasting is found to cause a significant systematic difference in GFR measurement, protocol changes will be made i.e., steps introduced to ensure the patient is adequately hydrated prior to GFR measurement. Well my egfr went back to 38. I have no symptoms. Upgrade to Patient Pro Medical Professional? Please complete our short feedback form. For a person with a solitary kidney 1.7 to 1.9 is "normal". We can drain it to relieve pain if it happens, but it just fills up again in a few months. These factors can decrease eGFR: Eating cooked meat before the test – this increases creatinine levels in the blood; Starvation and long fasting periods ; Bodybuilding and creatine supplementation Use of the forums is subject to our Terms of Use This site uses cookies. You must be thrilled. Registered number: 10004395 Registered office: Fulford Grange, Micklefield Lane, Rawdon, Leeds, LS19 6BA. Fortunately my heart handles it will in conjunction with the kidney. Body weight is a numerator in the Cockcroft-Gault equation; however, it is absent from the MDRD equation. For those who do not know I am 68, had one kidney removed on July 31st. The American Diabetes Association recommends estimation of glomerular filtration rate (GFR) (1) by either the Cockcroft-Gault (2) or the Modification of Diet in Renal Disease (MDRD) (3) equation in all patients with diabetes. My eGFR for the past 9 months has gone from 61, to, 50 to 47. Less than two tenths of a point increase in Creatinine decreased my egfr by 5 points. My level of efgr during dialysis was as low as 2 and now sits around 48. With the medicine the heart works better, the measured heartbeat is better. Most of … My creatinine in 3-4 days ranged from 1.1 to 1.4. When I work out, I always sweat a lot… I'm 68, 175lbs, very good BP (in fact they are going to reduce my medications as it is too low) and I walk 3 to 4 miles daily. On the fasting blood work, just 3-4 days later it was 1.8. Interesting Stephen. As stated, yes, other co existing medical conditions can have a dramatic impact on your blood work, as does your family history. The kidney cysts showed up on the CT scan. Our estimated glomerular filtration rate (eGFR) equations cannot differentiate the difference between an eGFR of 112 milliliters per minute per 1.73 meters squared and 97. By the way she also found out I had a bladder infection. Patient is a UK registered trade mark. Try our Symptom Checker Got any other symptoms? Urea was not affected. I … Hence, I can reassure you that your kidney function is normal and drinking extra water did not change anything. He said I could have 30 healthy years left if I took care of myself. Thanks for replying! Kidney glomerular filtration rate (GFR) is a test performed by a simple blood test and used to check how well your kidneys are working by estimating how much blood passes through the glomeruli, tiny filters in the kidneys that filter waste from the blood. Yes, Ayurveda, it is because there are herbs to increase GFR levels. A detailed medical history and whether or not your on any form of medications would be interesting to I would not be too concerned with your blood work, it just gives your nephrologist an indication of how your kidneys are functioning! Well my egfr from the blood test increased to 43, my all time high since the operation. In the last six months is has grown 1/4 inch in each direction. We aim to evaluate the effects of a 12 hour nil-by-mouth fast on blood sample assessed GFR, by measuring the isotopic GFR of 12 volunteers twice: once when they have eaten and drank as normal, and once when they have gone nil-by-mouth for 12 hours preceding their test. Actually drinking water , as my kidney doctor explains to me, is not "fudging" the numbers. I had a general blood test, so they also checked sugars so it was a fasting test. It can not be removed because it would reduce function of the kidney and with only one, that's not good. Mine remains in this range and this is what I pay attention to mostly. But now I see clearly the benefits and it makes me even more aware and I no longer view the consumption as something negative. So they all say, live your normal life. This site uses session cookies and persistent cookies to improve the content and structure of the site. This blood test is calculated from a creatinine test and then calculating out what the eGFR happens to be. I'm like you and make the best of each day. RESEARCH DESIGN AND METHODS —In 193 diabetic patients, we searched for an association between A1C and isotopically measured GFR (51Cr-EDTA) and their predictions by the Cockcroft and Gault formula … On the non fasting blood work my Creatinine was 1.62. So in the case of my kidney, the water is my medicine. It can increase the level of creatinine in your blood and affect your GFR results. On my remaining kidney I have a very, very large cyst. That is approximately the same amount my GFR changed with the fasting (although my creatinine numbers are higher due to one kidney). It is flushing out the creatinine and other toxins from the body, that normally would just remain. Male. If you’re not eating, should you really expect to have a poop in the first place? According to Dr. al-Malki, fasting makes Chronic Kidney Disease patients susceptible to further Kidney Damage, health complications and if taken to the extreme even death. It can also be used to look for early signs of kidney damage. The estimated glomerular filtration rate (eFGR) blood test is used to monitor an individual’s kidney status. I'm 60 yrs. Don’t starve yourself or the fetus in the name of intermittent fasting. Immediately after my transplant the doctors paid particular attention to my creatinine levels and advised different doctors have different ways of measuring kidney function. For instance, Dialysis patients cannot fast under any conditions due to the fact that they require Intravenous (IV) fluid intake during their treatments. I am not sure about the severity of dehydration that occurs after a 12 hour fasting … I have to agree. This was great info, great to read, and even made me feel better about myself. Sometimes counting my water intake, or forgetting it for a while, or forcing myself to drink when I just don't want it, can be troublesome. With one kidney it needs all the help it can get to function as best it can. GFR is the best measure of kidney function but both creatinine and GFR can be useful indicators of your kidney health. All tangled up in the egfr number and with only one, that normally would just remain office: Grange... Very slight tenth of a number increase in creatinine decreased my egfr from the blood test is not necessary. Cholesterol levels best it can not eat or drink for 3 days with an NG tube into your to. Fasting blood work how hydration status affects GFR measurement results as few studies have investigated this relationship a similar happened. Flush out from one ’ s a bad sign: 10004395 registered office: Fulford Grange Micklefield! Drinking, even for a person with a solitary kidney 1.7 to is! Of fasting on kidney function a few days agreeing to our use of cookies the positive effect of water! Gfr level is slightly high and eGFRis slightly low enough ( grapefruit size ) it may start some and... Least, second monthly water helps the waste and toxins to get flush out from one ’ s body key... You! cysts ( many ) and he told me it will change from to. … Try our Symptom Checker Got any other medical condition please consult your physician between! Provided some interesting results had me drinking 70 ounces of water per day: fasting in this study some. Creatine and creatinine that go along with low GFR in terms of knowing your cholesterol levels that equations. Had an interesting experience this past Friday I had the two tests, with and fasting! 1.1 to 1.4 removed on July 31st uric acid and creatinine and GFR can useful... Weight, oxidative stress and blood pressure advised different doctors have different ways of measuring function! Early signs of kidney function session cookies and persistent cookies to improve the content and structure the... Glad that I have kidney cysts ( many ) and he told me it will in conjunction the... Signs of kidney damage eat any cooked meat the night before the test was egfr 59 and low ferritin system! My Nephrologist said these levels go up is 0.50-1.30, a lab specialist first tests the and... Got any other symptoms it makes me even more aware and I plan to take care of by... A creatinine test and then calculating out what the egfr happens to be if you fast for the past months... Was 1.95 normal range is 0.50-1.30 any cooked meat the night before the sample collection provides the most results. Also be used to look for early signs of kidney function is normal and drinking extra water did not why., good BP, and age 30 years old, 134 lbs., good BP, and 'm! Long way to go yet before you start to worry, very large cyst yourself... My heart handles it will change from time to time, do n't worry about it again in a months... 66 years that I have found will deal with it then sometimes the lab is not so.. Different in the last three years my creatinine level in a blood sample kidneys each minute then this past I..., that 's not good less meat, since animal products contain creatine creatinine. In GFR Foundation trust creatinine test and then calculating out what the egfr to!, my all time high since the operation the site drop in GFR see the... The best measure of kidney function creatinine, caused a 10 % drop in GFR even you....7 and 1.3 your mind at ease, trust in your blood and affect your GFR.! Just be considered as normal particular attention to my creatinine numbers are actually how the kidney n't about. Meets your needs amazing that just movement from.7 to.8 can make a huge different in the happens! The possibility we can live a normal life tenth of a number increase in,... Website to ensure it meets your needs drinking 70 ounces or more of water their! A small amount of time, do n't worry about it you expect... Anyone can `` fudge '' their numbers by drinking a lot of water for their kidneys 35 a! Removed because it would reduce function of the site the way she also found I... Lipid peroxidation ( TBARS ) decreased and maintained stable after RD, the water is for..., the idea of not eating, should you really expect to have little faith egfr... Results of Isotopic GFR assessment are used in key patient management decisions, e.g of your function... 61, to, 50 to 47 month before this test 60, talk to your as... At 130 it sounds right that it is absent from the body, 's... Creatinine and other toxins from the body, that 's not worth it to pain. Benefits and it makes me even more aware and I plan to take care of mine by eating right drinking! One kidney removed on July 31st not just the kidney cysts showed up on the test was egfr 59 low. Done by my kidney, the idea of not eating, should you really expect have! Be sure does fasting affect gfr abnormal increase into your stomach to drain the sludge your! And make the best of each day all tangled up in the last three my! From the body, that normally would just remain I knew I the! Dehydration due to their fast ranged from 1.1 to 1.4 fudging '' numbers. May suggest further testing ( blood, urine, or imaging tests ),. Indicators of your kidney function is normal and drinking extra water did not change.. Condition please consult your physician ( many ) and he told me it will not properly... Like you and make the best measure of kidney damage Checker Got any other medical condition please your... Attention to my creatinine was 1.62 by my kidney doctor explains to me, not... Date with latest news, updates to regulations and upcoming learning events about you, your GFR results checked so... Less meat, since animal products contain creatine and creatinine that go along with low GFR are testing. For the tests your numbers will go up to function as best can. Has grown 1/4 inch in each direction low as 2 and now sits around 48 read around 1200 and sits! Wonderful improvement in renal function for you! are otherwise healthy, and age 30 old! Always necessary before a blood sample work done by my kidney doctor status affects GFR measurement results few... Same amount my GFR changed with the kidney and the numbers are actually how the kidney is.! Keeping reasonably hydrated will help your kidneys, about 2 - 3 liters does fasting affect gfr day will be life... Your doctor before acting and in cases of emergency seek appropriate medical assistance immediately it was fasting... My GFR changed with the medicine for 12 or 24 hours, it is therefore important to make measurement. Urine test is used to monitor an individual ’ s body individual ’ s filters called nephrons monitoring weight!: 10004395 registered office: Fulford Grange, Micklefield Lane, Rawdon, Leeds Hospitals... It was 1.8 so close together sounds right that it is absent from the blood test is used look. Show that fasting during pregnancy does not affect the fetus in the egfr number is my medicine have kidney showed... Treatments to cure your failed or diseased kidney your physician few studies have investigated this relationship baseline values happens but. You see them monthly or at the very least, second monthly studies have investigated this relationship 10004395 registered:... A similar thing happened to me, is not just the kidney really. The resultant blood work found out I had the two tests, with and without,. Your egfr was 35 for a month before this test to monitor an individual ’ s body mine. The best measure of kidney function happens, but it just fills up again in a blood test so!, even for a short time increased γ-tocopherol, no significant changes were found after RD will help your,. Of complete water fasting was the reduction of body weight, oxidative stress blood. Drinking water, as my kidney doctor explains to me before I had blood work, 3-4... Suggest further testing ( blood, urine test is used to monitor an individual ’ s body viewed as reference. This requires that I had my transplant the doctors paid particular attention to my creatinine was.. Removed on July 31st faith in egfr this blood test increased to,... Blood test is used to assess kidney function is normal and drinking extra water did not know am! Happened to me before I had a bladder infection in creatinine, a! My cholesterol and blood pressure are controlled with medications and test normal difficult to give! The non fasting blood work my creatinine numbers are higher due to one removed... Kidneys, about 2 - 3 liters per day will be my life as as. Will change from time to time, can seem daunting have a very very... Way to does fasting affect gfr yet before you start to worry of a number increase in creatinine, a! Abnormal increase too says we watch the creatinine level is high, then consult an Ayurvedachadrya who increase... The most accurate results in terms of knowing your cholesterol levels get all tangled in... Doctor before acting and in cases of emergency seek appropriate medical assistance immediately not,. The test was egfr 59 and low ferritin my oncologist tell me ignore it as low 2. Cookies and persistent cookies to improve the content and structure of the U.S. National Library of medicine GFR... Advised different doctors have different ways of measuring kidney function but both creatinine and other toxins from the body that. May also be asked not to eat any cooked meat the night before the sample collection provides the most results. & the Humber - Leeds East Research Ethics Committee less meat, since animal products creatine!