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Test Code CRP C-Reactive Protein (CRP)

Specimen Type



Mint green top with gel separator

Preferred Volume

3.5 mL



Turnaround Time

3 hours

STAT Availability

Not Available

Test Usage

CRP assays are used to detect systemic inflammatory processes; to assess treatment of bacterial infections with antibiotics; to detect intrauterine infections with concomitant premature amniorrhexis; to differentiate between active and inactive forms of disease with concurrent infection;  to determine the presence of post-operative complications at an early stage, such as infected wounds.

Test Methodology

Particle-enhanced immunoturbidimetric assay

Additional Information

Refer to high sensitivity CRP test for use in cardiac risk assessment.

CPT Code


Test Includes

quantitative determination of CRP in plasma

Critical Results


Test Limitations

Significantly decreased CRP values may be obtained from samples taken from patients who have been treated with carboxypenicillins.

Reference Range

<5.0 mg/L

Minimum Volume

2 mL

Fee Code