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St. John Health System
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C-Reactive Protein (CRP) Quant

Order Name CRP
Test Number: 2008425
Revision Date 04/26/2021
Test Name Methodology LOINC Code
C-Reactive Protein (CRP) Quant
Immunoturbidimetry 11039-5 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 1 mL (0.5) Plasma Lithium Heparin PST (Light Green Top) Refrigerated
Alternate 1 1 mL (0.5) Serum Clot Activator SST Refrigerated
Instructions Stability: Ambient 15 days, Refrigerated 2 months, Frozen 1 year
GENERAL INFORMATION
Testing Schedule Daily 
Expected TAT 1-3 days 
Clinical Use Useful for the measurement of the body's acute-phase response and cardiac risk assesment. 
CPT Code(s) 86140
Internal Comments 7/14/17 updated stability - JK
12/29 changed primary from gold to green
Service Provided By Labcorp Oklahoma, Inc.
Lab Section Chemistry