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HelpTest Code CRT2F Creatinine, 24 Hour, Urine
Specimen Required
Only orderable as part of a profile. For more information see:
-TLTE4 / Leukotriene E4, 24 Hour, Urine
-MCM24 / Mast Cell Mediators, 24 Hour, Urine
Secondary ID
618161Useful For
Normalizing urinary analytes to account for the variation in urinary concentration
Method Name
Only orderable as part of a profile. For more information see:
-TLTE4 / Leukotriene E4, 24 Hour, Urine
-MCM24 / Mast Cell Mediators, 24 Hour, Urine
Enzymatic Colorimetric Assay
Reporting Name
Creatinine, 24 HR, USpecimen Type
UrineSpecimen Minimum Volume
1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Urine | Frozen (preferred) | 30 days | |
| Refrigerated | 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:
-TLTE4 / Leukotriene E4, 24 Hour, Urine
-MCM24 / Mast Cell Mediators, 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 younger than 18 years.
Day(s) Performed
Monday through Sunday
Report Available
1 dayPerforming Laboratory
Mayo Clinic Laboratories in Rochester
Test Classification
This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| CRT2F | Creatinine, 24 HR, U | 65634-8 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| CR_AF | Creatinine, 24 HR, U | 2162-6 |
| TM10F | Collection Duration (h) | 13362-9 |
| VL8F | Urine Volume (mL) | 3167-4 |
| CRF24 | Creatinine Concentration, 24 HR, U | 20624-3 |