Sign in →

Test Code CRP C Reactive Protein

Clinical System Name

C Reactive Protein


CRP is synthesized by the liver and is one of the acute phase proteins. CRP concentration measurements are useful in the detection and evaluation of inflammatory disorders, tissue injury, and infections.

Sample Requirements

Specimen: Whole Blood

Container(s): Gold SST, Dark Green/Sodium Heparin, Red, Lavender/EDTA, Gold Microtainer, Lt. Green/Li Heparin Microtainer, Lavender/EDTA Microtainer

Preferred Vol: 0.5 mL

Minimum Vol: 0.1 mL serum or plasma


Note:  Method is affected by hemolysis.


Processing Instructions

Reject due to: Hemolysis, Age of specimen

Spin: Y

Aliquot: Y

Temp: 2-8oC

Storage location: Core 5 Chemistry Refrigerator


Off-site collection:  Avoid hemolysis. Spin blood, refrigerate serum or plasma.



Specimen Type Temperature Time
Serum or Plasma RT

4 H

Serum or Plasma 2-8oC

 3 D

Serum or Plasma -20oC or -70oC

 180 D



STAT Performed TAT
Y 24/7 1 H


Performing Laboratory

Seattle Children's Laboratory    


Department:  Core Chemistry

Phone Number: 206-987-2617

Reference Range


All Ages

0.8 mG/dL



Method:  Immunorate by Vitros 4600

Analytical Volume:  0.02 mL + 0.03 mL dead space

CPT Codes