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HelpTest Code LAB66 Creatinine, Plasma
Performing Laboratory
Barnes-Jewish Hospital Laboratory
Methodology
Enzymatic (Creatininase)
Traceable-Isotope Dilution Mass Spectrometry (IDMS)
Literature Reference:
Package insert: Creatinine CREP2 reagent. Roche Corporation, 02/2019.
Specimen Requirements
Note: This test is also available as part of LAB15 Basic Metabolic Panel (BMP), LAB17 Comprehensive Metabolic Panel (CMP), and LAB19 Renal Function Panel.
Specimen Type: Plasma
Container/Tube: Mint-green top (lithium heparin)
Specimen Volume: Full tube
Day(s) Test Set Up
Monday through Sunday
Turnaround Time:
STAT: 1 hour after receipt in laboratory
Routine: 2 to 4 hours after receipt in laboratory
Test Classification and CPT Coding
82565
Reference Values
Males
0-6 years: 0.10-0.60 mg/dL
> 6-13 years: 0.20-0.80 mg/dL
> 13-19 years: 0.40-1.20 mg/dL
> 19 years: 0.80-1.30 mg/dL
Females
0-6 years: 0.10-0.60 mg/dL
> 6-13 years: 0.20-0.80 mg/dL
> 13-19 years: 0.40-1.00 mg/dL
> 19 years: 0.60-1.10 mg/dL
Literature References:
1. Rifai N, Horvath AR, Wittwer AT eds: Textbook of Clinical Chemistry and Molecular Diagnostics 6th ed: Chapter 59, p. 1256, Elsevier, St. Louis, MO 2018.
2. Sanger AK, Lockwood C, Snozek CL, Karon BS, Scott MG, Jaffe A. Catecholamine Interference in Enzymatic Creatinine Assays. Clin Chem 2009; 55:1732.
Specimen Transport Temperature
Ambient
Additional Information
For BJH Laboratory Use Only
Alternate Tube:
1 dark green-top (lithium heparin) tube
1 red-top tube
Laboratory Processing Instructions:
Test performed in BJH Core Lab. Processed by automated line for delivery to the Cobas 8000. Completed specimens are stored refrigerated for 5 days.
Test performed in South County Siteman and Ambulatory Cancer Building Lab. Centrifuge sample and deliver to the Cobas. Completed specimens are stored refrigerated for 5 days.
Special Instructions
See Analyte Stability Chart under General Information for a complete list.
LOINC Code Information
| Name | LOINC Code |
| Creatinine | 2160-0 |