C-Reactive Protein (CRP), Plasma

C-Reactive Protein (CRP)

Order Code:	CRP
Epic Lab Code:	LAB149
Order Form:	A-1a General Lab or Epic Req

Chemistry
6240 RCP
356-3527

Specimen:

Plasma

Collection Medium:

Plasma Separator Tube

Alternate Collection Media:

Call laboratory for additional acceptable specimen collection containers.

Minimum:

3 mL whole blood from light gr een top tube or 1 light green microtainer for pediatric patients

Testing Schedule:

24 hrs/day, 7 days a week, including holidays.

Analytic Time:

1 hour (upon receipt in laboratory)

Reference Range:

<0.5 mg/dL

Test Limitations:

Criterion: Recovery within plus or minus 10% of initial values. Icterus: No significant interference up to an I index of 60 (approximate conjugated and unconjugated bilirubin concentration: 60 mg/dL or 1026 umol/l). Hemolysis: No significant interference up to an H index of 1000. (approximate hemoglobin concentration: 700 mg/dL or 435 umol/l ) Lipemia (Intralipid): No significant interference up to an L index of 1000 (approximate triglyceride concentration: 2000 mg/dL or 22.8 mmol/l). There is poor correlation between turbidity and triglyceride concentration. Rheumatoid factors less than 1200 IU/mL do not interfere. A high-dose hook effect may occur at CRP concentrations greater than 50 mg/dL. Significantly decreased CRP values may be obtained from samples taken from patients who have been treated with carboxypenicillins.

Methodology:

Immunoturbidometric

CPT Code:

86140

See also:
C-Reactive Protein-Other, Body Fluid (e.g., surgical drain, pericardial, peritoneal, peritoneal dialysis, pleural, or synovial)