eGFR
Estimated glomerular filtration rate
Low
82.7mL·min⁻¹·1.73 m⁻²Ref 90–120 mL·min⁻¹·1.73 m⁻²
Z -2.97↓ Bad

The card shows an example result of 82.7 mL·min⁻¹·1.73 m⁻², which is 2.97 SD below the mean.

What it measures

Estimated glomerular filtration rate is calculated from serum creatinine, age, and sex. It estimates how much blood the kidneys clean each minute.

Reference range

FieldValue
AbbreviationeGFR
GroupKidney and protein
UnitmL·min⁻¹·1.73 m⁻²
Healthy range90–120
Mean105
SD7.5
Direction↓ Bad — a lowered value is the concern.

The mean is (low + high) / 2 and the SD is (high − low) / 4, so the healthy range covers Z from −2 to +2.

Reading the result

  • High — Not a concern.
  • Low — Suggests reduced kidney function. 60 to 89 is mildly reduced, and below 60 for three months or more is chronic kidney disease.

Notes

  • eGFR falls slowly with age.
  • Muscle mass affects creatinine, so the estimate is less accurate in very muscular or frail people.
  • This page is general information, not medical advice. Discuss results with a clinician.