Oct 30, 2017




Clinical Hub,Tools & Resources,UWHC Lab Test Directory,Chemistry

C-Reactive Protein

C-Reactive Protein (CRPN) Chemistry Lab Test

Name: C-Reactive Protein

Test Name: C-Reactive Protein

Health Link Test Code: CRPN

LIS Test Code: CRP

CPT Code(s): 86140

Methodology: Turbidometric

Days Performed: Daily, 24 hours.

In-Lab Turnaround Time: 4 hours.

Stat In-Lab Turnaround Time: 1 hour.

Specimen: Blood

Collection Container: Green cap with yellow ring (PST)

Also Acceptable: Green top, Red cap with yellow ring (SST), Red top

Collection Volume: 1 mL

Pediatric Collection Volume: 0.4 mL

Stability Ambient:

15 days

Stability Refridgerated:

2 months

Stability Frozen:

3 years

Sample Analyzed: Plasma or serum

Testing Volume: 0.5 mL

Pediatric Testing Volume: 0.2 mL

Specimen Processing:

Centrifuge. If a complete barrier has not formed, transfer cell-free plasma/serum to plastic vial. Refrigerate.

Specimen Transport:

Transport specimen to the laboratory. Transport with coolant pack if coming from clinic location.


0 days-17 years: 0.0-2.9 mg/dL

18 years and up: 0.0-1.0 mg/dL

Interpretation Type: Reference Interval

Additional Information:

Levels can rise to over 30 mg/dL within 24 to 48 hours of an acute insult such as major surgery or a myocardial infarction. It can fall just as rapidly with spontaneous or therapeutically induced remission of disease activity.