Body Fluid, Creatinine
Also known as: BF CRT
Use
The Body Fluid, Creatinine test is used to measure creatinine levels in body fluids, particularly peritoneal or ascites fluid, to help assess renal function and detect peritoneal cyst rupture into the abdomen. This measurement can aid in the evaluation of renal function in patients undergoing dialysis or with suspected peritoneal disease, as decreases in creatinine clearance can indicate impaired kidney function or blockages.
Special Instructions
The test requires specific specimen handling and processing procedures, including centrifugation and separation to remove cellular material before transport. Refrigerated transport conditions are required to maintain specimen stability. Specimens too viscous to be aspirated by an instrument are not acceptable.
Limitations
This test has a few limitations. It is designed to measure creatinine in specified body fluids, and the procedure may not be adapted for other types of specimens. Specimens need to be free from excess cellular material and the assay may not determine creatinine levels accurately if the specimen is too viscous to be aspirated. The test is processed and reported quickly, but as it has not been cleared by the FDA, its regulatory status might limit its acceptance in certain contexts.
New York Approved
Methodology
Automated Analyzer (Clinical Chemistry)
Biomarkers
LOINC Codes
- 12190-5
- 47938-6
Result Turnaround Time
1 day
Related Documents
For more information, please review the documents below
Specimen
Body Fluid
Volume
1 mL
Minimum Volume
0.2 mL
Collection Instructions
Centrifuge and separate to remove cellular material before transport. Refrigerated transport is necessary.
Storage Instructions
Refrigerate specimen after separation from cells with a stability of 1 week at room temperature and refrigerated, 3 months if frozen.
Causes for Rejection
Specimen types other than those listed or those too viscous to be aspirated by instrument.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 1 week |
| Refrigerated | 1 week |
| Frozen | 3 months |