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HelpTest Code LAB3036 Creatinine, Dialysis Body Fluid
Performing Laboratory
St. Louis Children's Hospital Laboratory - Chemistry
Specimen Requirements
Patient Preparation: None
Collection Container/Tube:
Preferred: Plain red-top tube
Acceptable: LiHep syringe or sterile screw-apped plastic container
Specimen Collection Volume: 1.0 (minimum 0.5 mL) dialysate fluid
Submission Container/Tube: If specimen is coming from outside facility aliquot a minimum of 0.3 mL of fluid into a plastic screw-capped tube for transport.
Special Instructions: Send to lab promptly at ambient temperature.
NOTE: SPECIMEN SOURCE IS REQUIRED ON REQUEST FORM FOR PROCESSING
Sample Rejection
Mislabled or unlabeled specimens
Logistics
Test Availability: Monday-Sunday
Cut-off time: None, performed as received
Turnaround Time: Same Day; 2 hours from receipt in performing lab
Reference Values
Reference Interval: No reference intervals established
Critical Value: None established
Methodology
Enzymatic Colorimetric
Specimen type is not approved for use in this method by the FDA. Analytical characteristics and clinical utility have not been established
Limitations
- NA
Additional Information
FOR SLCH CORE LABORATORY USE ONLY
Lab Processing Instructions: Centrifuge specimen and aliqout minimum of 0.5 fluid into a Roche false-bottom tube for testing.
Processed Volume: minimum 0.3 mL dialysate fld
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| dialysate fluid | Ambient | not established |
| Refrigerated | not established | |
| Frozen | not established |
NOTE: make sure order is for correct specimen type (dialysate)
Test Classification and CPT Code
82570
LOINC
Creat BF: 12190-5
Fluid Type: 14725-6
Last Reviewed
07/2025