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HelpTest ID CRT24 Creatinine, 24 Hour, Urine
Specimen Required
Only orderable as part of a profile. For more information see:
-NMH24 / N-Methylhistamine, 24 Hour, Urine
-RB24 / Retinol-Binding Protein, 24 Hour, Urine
-A124 / Alpha-1-Microglobulin, 24 Hour, Urine
Secondary ID
610597Useful For
Urinary creatinine, in conjunction with serum creatinine, is used to calculate the creatinine clearance, a measure of renal function
Normalizing urinary analytes to account for the variation in urinary concentration
Specimen Type
UrineSpecimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Urine | Refrigerated (preferred) | 30 days |
| Frozen | 30 days | |
| Ambient | 14 days |
Reject Due To
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.Reference Values
Only orderable as part of a profile. For more information see:
-NMH24 / N-Methylhistamine, 24 Hour, Urine
-RB24 / Retinol-Binding Protein, 24 Hour, Urine
-A124 / Alpha-1-Microglobulin, 24 Hour, Urine
Normal values mg per 24 hours:
Males: 930-2955 mg/24 hours
Females: 603-1783 mg/24 hours
Reference values have not been established for patients who are less than 18 years of age.
For SI unit Reference Values, see https://www.mayocliniclabs.com/order-tests/si-unit-conversion.html
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Day(s) Performed
Monday through Sunday