Survey: Your Kidney function (eGFR) and age?

Creatinine = 1.01 mg/dL (indicated max lab range = 1.2 mg/dL).
Cysttine = unkownw
Caucasic eGFR per EPI-CKD = 78 mL/min/1.73 m^2

Age 65, male.

I take modest amounts of creatine daily, about 1.5 grams. This might elevate modestly creatinine
I lift weights with moderate intensity but almost daily.
The above may bias the eGFR toward lower values.

No Rapa, no drugs, only minidoses of ezitimibe.
Main food: vegetables, with lots of nuts, dairy, a little whole-grain cereals, a little fruit and legumes. Protein in the range of 1- to 1.2 g/kg/d, or even less, depending on hunger.

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Looking at your avatar mccoy… you’re doing great at 65 years.

Curious tho… are you moving toward dosing rapamycin and are you on… or considering TRT?

Hi Agetron, Rapa is really hard to take hold of here. The only way, apparently, is to travel to Turkey or Dubai and convince a pharmacist to do that. My strategy is to try to manipulate the upstream signals, even as David Sabatini hinted at.
TRT, I’m not sure, but my total testosterone level is still decent, although the free testosterone might be (surely is) declining. I plan to see a specialist and listen to his advice.
Other things, unfortunately, I don’t have much time right now, so I’m just concentrating on lifestyle and perhaps introducing some other pharmaceutical drugs in minidoses, but all my metabolic values are all right so far. Blood sugar a little high, but Homa-IR low. Hence, I’m just checking myself regularly and waiting…

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Ahhh… I thought you were in the USA.

Looks like you have it covered bud.

Keep up the great work.

After 4.5 years on rapamycin no breaks … have now been off rapamycin for 2 1/2 months to see how thymus fat reduction is doing with HGH for one year.

I definitely can feel the changes being off rapamycin … glad to be back on soon.

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And you keep up with you iron pumping, muscles definitely in hypertrophy!!!

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Hahaha… exactly.

Hey, I am not embarrassed to say HGH for increased cell production with TRT… for normal higher testosterone to increase cell volume doesn’t hurt :muscle: .

The year of HGH has given a hard solidness to muscles… I was noticing partcularly my shoulders, while scrubbing up in shower today.

You are making a distinction without a difference. Everyone knows they’re synonymous.

My cystatin-c egfr is a little over 110. Male, mid 40s. I take creatine, and roughly 1g/lbs of protein every day.

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Age: 39

Creatinine: 0.96 mg/dl
Creatinine-based eGFR: 103

Cystatin C: 0.82 mg/L
Cystatin C-based eGFR: 111

BUN: 15.6 md/dl, if that’s useful at all

I do supplement creatine

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I think that might be mg/dL rather than nanograms.

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Incidentally these are my creatinine figures for 2026
86.3 91.9 92.1 84.8 75 93.5
These are SI units of micromoles per litre.

Age 65.

Using this calculator

75 gives 90.7
93.5 gives 70.3

These are the figures in US units (mg/dL) for comparison

0.97519 1.03847 1.04073 0.95824 0.8475 1.05655

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My last test which has eGFR was in Jan 25 when I was 68.

I am 5ft 9in/175 cm and 73 kg BMI 24.

Serum Creatinine was 91 umol/L

egfr (CKD EPI)/1.73m*2 = 75

Diet mostly veggie, some fish. Wasn’t taking loads of creatine back then.

Rapa 5 mg/week

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Yes, well spotted. I corrected it, thanks.

59yo
I take creatine and rapa
Vegan

EGFR: 89 mL/min/1.73m2

Creatinine: 0.77mg/dL

Cystatin C: 1.04mg/L

BUN: 18mg/dL

I wish the world used the same units of measurement for everything…it would be nice to take a glance to see how I compare.

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Creatine seemingly has a huge impact on my creatinine and eGFR. In the year after I started taking it, my creatinine went from .84 mg/dl to 1.17 mg/dl, and my eGFR went from 111 to 69. I’m 42.

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I know I’m late to this but might as well :

eGFR=99ml
age: 59
sex: male

diet: various mainly north American, trying to limit unhealthy fats, and processed carbs
Rapa user: on and off for last three years, currently 6mg/week with EVOO for last 3 months

Sorry not very literate on this, so are these numbers good for age or not? So, was Creatinine beneficial for your eGFR/Kidneys?

111 is fine/good for my age. 69 is quite bad but it’s just an artifact of my creatine use so it doesn’t reflect my actual kidney function. eGFR is calculated using creatinine and inversely related to it.

Thanks for the reply, I actually am not using creatine but just so happened that I bought some and I’m about to start using today or tomorrow. So, If I understand it correctly my eGFR of 99 which shows optimal for my age will suffer, but that doesn’t necessarily mean it is a bad thing? and if eGFR may not be a good indicator of kidney health (? when one is using Creatine) is there a different test to measure the kidney’s proper function?

Get a egfr based cystatin-c. It is the superior way to measure kidney function anyway.

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