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HelpTest Code 161 Creatinine
Additional Codes
ALAB: CR
PowerChart: Creatinine
MA Cerner: Creatinine
Test Method
MercyOne DQ: Jaffe Rate; Beckman DxC700AU
MercyOne DV: Catalytic Oxidation Electrode; iSTAT
MA: Kinetic Colorometric Method; Roche Cobas 6000
MA West: Catalytic Oxidation Electrode; iSTAT
Specimen Requirement
0.5 mL serum or plasma is required.
Additional Specimen Collection Information
Collect blood in a lithium heparin, green-top or red-top tube. PST and SST (gel tubes) are acceptable. Serum or plasma should be separated from contact with the cells within 2 hours of collection. Specimens not centrifuged within 4 hours of collection may be rejected. Refrigerate the specimen if unable to assay within 8 hours of collection. Hemolyzed specimens are not acceptable. Samples with >3+ lipemia must be cleared prior to analysis.
Performance
Testing is performed Monday through Sunday.
Routine orders: Typically completed within 4 hours after the specimen arrives at the testing site.
Expedite: Typically completed within 1 hour after the specimen arrives at the testing site.
STAT: Typically completed within 30 minutes after the specimen arrives at the testing site.
Reference Values
0.4-1.4 mg/dL
eGFR (calculated): ≥ 60 mL/Min/1.73m2
eGFR-AA (calculated): ≥ 60 mL/min/1.73m2
Useful For
Creatinine:
- Diagnosing and monitoring treatment of acute and chronic renal diseases
- Adjusting dosage of renally excreted medications
- Monitoring renal transplant recipients
Estimated Glomerular Filtration Rate (eGFR):
Serum creatinine measurement is used in estimating GFR for people with chronic kidney disease (CKD) and those with risk factors for CKD (diabetes, hypertension, cardiovascular disease, and family history of kidney disease).
LOINC Code Information
2160-0 Creatinine [Mass/Volume] In Serum Or Plasma
Limitations
MercyOneDBQ: Venipuncture immediately after or during the administration of Metamizole (Dipyrone) may lead to falsely low results for Creatinine. Venipuncture should be performed prior to the administration of Metamizole.
CPT Code Information
82565 Chemistry: Creatinine, Serum