eGFR blood test
An estimate of how well the kidneys filter, calculated from creatinine, age and sex.
- Typical range (adult men)
- above 90 mL/min
- Panel
- Kidney Function
- Also called
- Estimated glomerular filtration rate
Reference ranges vary between labs; use the range on your own report. Results need to be read by a doctor alongside your symptoms and other tests.
Why it’s tested
The headline kidney number. Because it is worked out from creatinine, it can read low in very muscular people.
What can raise it
- Usually not a concern
What can lower it
- Reduced kidney function
- High creatinine from muscle mass or creatine (a false low)
- Dehydration
Getting an accurate result
- Test in the morning, especially for hormones, which run highest early in the day.
- Stay hydrated, and test at the same lab and time of day each time so results compare fairly.
Compounds that affect eGFR
Monitored with these, based on their known properties:
- Deca-Durabolin (Nandrolone Decanoate)
- NPP (Nandrolone Phenylpropionate)
- Trenbolone Acetate
- Trenbolone Enanthate
- Anadrol (Oxymetholone)
- Halotestin (Fluoxymesterone)
- Superdrol (Methasterone)
- DHB (1-Testosterone / Dihydroboldenone)
- Parabolan (Trenbolone Hexahydrobenzylcarbonate)
- Methyltrienolone (Oral Tren / Metribolone)
- Furosemide (Lasix)
- Hydrochlorothiazide (HCTZ)
Other kidney function tests
Questions
What is a normal eGFR level?
A typical adult male reference range is above 90 mL/min. Ranges differ for women, by age and between labs, so compare with the range printed on your report.
What does high eGFR mean?
Common reasons include usually not a concern. One result outside the range isn't a diagnosis: a doctor will look at it with your other markers and history.
What does low eGFR mean?
Common reasons include reduced kidney function, high creatinine from muscle mass or creatine (a false low) and dehydration.