Creatinine, Fluid
Test Mnemonic
FCRE
CPT Codes
- 82565 - QTY (1)
- 82570 - QTY (1)
LOINC ®
12190-5
Performing Laboratory
Cleveland Clinic Laboratories
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL | Fluid, body | Sterile container | Refrigerated | Viscous specimens will be rejected. Indicate source of fluid. |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 0.5 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Ambient | 7 days |
| Refrigerated | 7 days |
| Frozen | Unacceptable |
Days Performed
Sun - Sat
Turnaround Time
8 hours
Methodology
| Name | Description |
|---|---|
| Enzymatic |
Special Info
Indicate body fluid type/source.
Clinical Info
Serous fluids: Creatinine measurement in peritoneal or drainage fluids is considered a useful test for detecting the presence of urine leaking through a defect in the urinary tract. A ratio of serous fluid creatinine to a concurrent serum creatinine > 1.0 indicates possible urine extravasation. Amniotic fluid: Creatinine measurement can be performed on amniotic fluid. The interpretation of the result is dependent on the clinical context, including gestational age. See references below. References: 1. CLSI. Analysis of Body Fluids in Clinical Chemistry; Approved Guideline. CLSI document C49-A. Wayne, PA: Clinical Laboratory Standards Institute; 2007. 2. Benzie RJ, Doran TA, Harkins JL, Owen VM, Porter CJ. Composition of the amniotic fluid and maternal serum in pregnancy. Am J Obstet Gynecol 1974;119:798-810.