Search results for query: Cystatin C

  1. Nelson Vergel

    What Does Creatine Do for Men on TRT? Proven Benefits Beyond Muscle

    ...though it can create falsely low eGFR readings due to elevated creatinine levels. To ensure accurate assessment, experts recommend using a Cystatin C blood test rather than standard creatinine panels. Frequently Asked Questions Should I take creatine on TRT injection days? There is no known...
  2. G

    Kidneys messed up?

    ...you, I would request one of those as confirmation of the results you received. In my case, the GFR still came back somewhat low with the Cystatin C test, so my doctor bundled me up and sent me off to a specialist, "out of an abundance of caution," he kept reassuring me as I pulled myself off...
  3. G

    Kidneys messed up?

    ...creatinine like creatine use and possibly recent hard exercise. eGFR is a calculated number IIRC and is based off of creatinine. I use the cystatin C test which is apparently much more accurate. There is another test I have forgotten the name of which is the real GFR (non- calculated) but...
  4. Nelson Vergel

    TRT Blood Test Discussion: Master Index

    Blood Test Discussion — Master Index Your complete guide to understanding and ordering lab tests for TRT monitoring. Last updated: February 2026 ▶ GETTING STARTED Blood Tests Needed Before and During TRT ⭐ Start Here (56K views) Lab Tests to Monitor TRT: Free Booklet Download (818 views)...
  5. Nelson Vergel

    How Anabolic Agents Can Save Your Muscles: One Man's Journey from Death Sentence to Thriving at 66

    ...Kidney Function: Standard tests measure creatinine, but if you have high muscle mass, your creatinine will naturally be higher. Add cystatin C testing for a corrected GFR (glomerular filtration rate) that accounts for muscle mass. Important Discovery: Nelson has found that androgens...
  6. M

    From enclomiphene to TRT cream - where do I stand?

    1) Already stopped enclo.10d ago. 2) Last cys-c test was high normal so hope it will continue down; eGFRs all normal; will repeat testing 3) Like I mentioned in my post, FT3 is elevated because of peak serum level from dosing 2h prior to draw 4) Taking 10kiu Vit D eod instead on ed - this level...
  7. FunkOdyssey

    From enclomiphene to TRT cream - where do I stand?

    DHT / E2 ratio + enclomiphene ER antagonism is relevant for tendinopathy. You might experiment with removing enclomiphene and see if the tendons improve without the estrogen antagonism. Enclomiphene is also keeping your SHBG high, and yes, it is also the reason for the normal levels of LH /...
  8. M

    From enclomiphene to TRT cream - where do I stand?

    ...from TRT? • Ferritin is higher than usual — may be related to diet (heme iron supps) but keeping an eye on it • IL-6, hsCRP and cystatin C (eGFR) are elevated (separate issue I’m tracking — possible LPS exposure months back) • Have been on peptide regimen...
  9. Nelson Vergel

    Low EGFR?

    Creatine artificially decreases eGFR but it really does not affect the kidneys. I tell doctor to use Cystatin C test for people taking creatine since it has no interactions with this supplement.
  10. Vince

    Kidney Concerns

    My doctor also gives me the Cystatin C Test, because I workout and use creatine.
  11. W

    Kidney Concerns

    I was going to suggest also the Cystatin-C with EGFR, I would not trust the basic Creatine test contained in a CBC. Do it FASTED, too. National Kidney Foundation takes issue with that test, too, as being a poor indicator of kidney function.
  12. BadassBlues

    Kidney Concerns

    Thanks for the heads up on the Cystatin C Test, I will get one done this week as I was going to have another urinalysis done as well. I bought some protein test strips and tested twice, which showed normal, so I don't know what to think. My BP is very good, no diabetic issues at all. I do tend...
  13. G

    Kidney Concerns

    I've had some kidney concerns and in general I view the kidneys as a very under-appreciated risk. A few thoughts: - Get a cystatin C test. From everything I've researched, it is one of the best, if not the best, overall test of kidney function. Many of the other tests are very subject to...
  14. O

    Ferritin and B12 Questions

    ...yet. Bloods this week: Ferritin came back at 21 B12 came back at 375 Folate 8.1 Homocystine 12.1 METHYLMALONIC ACID is still out. Cystatin C: EGFR: Tests from 10/07: CHOLESTEROL, TOTAL 256 H HDL CHOLESTEROL 47 L TRIGLYCERIDES 196 H LDL-CHOLESTEROL 173 H CHOL/HDLC RATIO 5.4 H NON...
  15. Vince

    High creatinine

    This is the lab that I got. My kidneys were much better than first thought. https://www.excelmale.com/threads/is-the-cystatin-c-kidney-function-better-than-creatinine-for-muscular-men.29564/
  16. USMC

    Maximizing Benefits with the Bodybuilder Blood Test Panel

    If you don't mind me asking, generally how large? You think it would be worth it to get it done? I'm not sure why my PCP won't order it. She has done pretty much everything else I've asked her for. She just said it's not an issue yet and we'll test yearly. Well, I want to know if it's an issue...
  17. aloetard

    Maximizing Benefits with the Bodybuilder Blood Test Panel

    From last time. https://www.excelmale.com/threads/creatine-hematocrit-and-kidney-function.28160/post-260642 Your eGFR is estimated from creatinine. Cystatin C provides an independent and less biased estimate. Difference between my two estimates was very large.
  18. USMC

    Maximizing Benefits with the Bodybuilder Blood Test Panel

    I wonder if it would be worth it to get a Cystatin C test done. I was surprised that my recent blood test went from 60 to 57. I'm no Hercules but I have a good amount of muscle - IMH :) My Creatinine was also elevated. I workout hard and take 3-4 grams of Creatine per day...my PCP doesn't see...
  19. Nelson Vergel

    Maximizing Benefits with the Bodybuilder Blood Test Panel

    ...HDL and triglycerides. Cardiovascular issues may develop over time if HDL levels are significantly low. FASTING IS REQUIRED. EGFR and cystatin C kidney test Cystatin C is a more accurate method to evaluate renal function in people with higher muscle mass because growing muscle mass...
  20. Nelson Vergel

    CMP Panel: How to Read Blood Test Results

    ...disease is detected, the better the chance of slowing or stopping its progression. People with high creatinine (low eGFR) should get a Cystatin C test which may be more accurate in certain cases. Elevated creatinine is not always representative of a true reduction in eGFR. A high reading may...
  21. Nelson Vergel

    Bodybuilder Blood Tests: Nelson Vergel Reviews Two Cases

    ...those using growth hormone supplements. Kidney Function and Liver Enzymes Kidney Function: Good kidney function indicated by low cystatin C levels and high eGFR. Liver Enzymes: Elevated AST and ALT levels likely due to intense workouts, not liver toxicity. Iron Metabolism and Ferritin...
  22. BadassBlues

    Astragalus

    Astragalus has many purported benefits and has been used for centuries for a wide range of conditions. I can't see any downside to adding it to your supplement regimen. To do it to lower a creatinine score however doesn't seem like a logical decision. Supplementation with creatine is going to...
  23. DixieWrecked

    Astragalus

    ...If I test my cystatin-c, that test says my values are good. According to discountedlabs the cystatin-c test is more accurate. Cystatin C Test Either way, for some reason elevated creatinine is annoying me even if unwarranted. Supposedly astragalus has increased egfr in some people pretty...
  24. Belekas

    "TRT/HRT/Nutrition/Cognition/Wellness/LT student of the game"

    Looks like admins fixed the image upload errors so thank you guys! Here are my last weeks simple blood test results GP ordered after I pressed her nicely just a bit hehe Seems that works over here else you will get FBC done and thats it lol Anyway everything looking OK to me except the Liver...
  25. Nelson Vergel

    Testosterone Replacement Blood Test Targets

    ...intake, creatine supplements, and higher muscle mass can also increase creatinine and decrease eGFR. If under 60, explore getting a Cystatin C test. Liver enzymes ≤ 1.2 x top value of reference range If high, stopping oral supplements can help. AST and ALT can increase with exercise but...
  26. Nelson Vergel

    Oxandrolone Kidney Damage?

    Creatine falsely increases creatinine. Not clinically significant. But, in any case, get a Cystatin C test to make sure all is well. Also, watch for this since it may increase liver enzymes, and doctors will blame oxandrolone...
  27. Nelson Vergel

    Oxandrolone Kidney Damage?

    https://www.discountedlabs.com/blog/the-cystatin-c-blood-test
  28. T

    Oxandrolone Kidney Damage?

    Cystatin C test. https://www.discountedlabs.com/cystatin-c-test Compare eGFRs. Look up differences for muscular dudes. https://www.excelmale.com/forum/search/673736/?q=Cystatin+C&o=date
  29. Nelson Vergel

    Kidney Lab Tests You Should Know for Chronic Kidney Disease

    ...Kidney Disease Cause UTI? How Long Can You Live with Chronic Kidney Disease? CMP - Comprehensive Metabolic Panel Aldosterone, Serum Cystatin C with EGFR Blood Test Electrolyte Panel Uric Acid (Serum) Urinalysis Be kind to your kidneys. Get tested today! What is CHD and Why it is Important...
  30. T

    Need assistance in understanding blood test results - Ranges not defined?

    good point. my egfr goes to hell when i do carnivore diet + supplement creatine + take in a lot of additional protein. they told me at defy that it is normal for it to go down. when i pause, i get up to 110, which is a value of a baby and i am 44
  31. S

    Need assistance in understanding blood test results - Ranges not defined?

    ...calculated from creatinine so it means nothing if your creatinine is artificially elevated by supplements - in such cases you have to do Cystatin C test which is not affected by supplements. What kind of a diet are you on? Your triglycerides and Hemoglobin 1Ac are high which suggests too...

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