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HelpTest Code HSCRP Cardiac CRP, High Sensitivity, LAB150
Methodology
Particle enhanced immunoturbidimetric assay
Performing Laboratory
St. Luke's Hospital Cedar Rapids
Specimen Requirements
Container/Tube:
Preferred: Green-top (lithium heparin) tube
Acceptable: Gold-top serum gel tube, plain red-top tube, EDTA plasma
Minimum Specimen Volume: 4.5 µL plus a dead volume
Stability: Specimens may be stored at 15-25 °C for 11 days, 2 – 8°C for 2 months. Samples should be separated within 2 hrs of being collected. For longer storage, samples may be frozen at -20°C for up to 3 years.
Reference Values
0.0 - 5.0 mg/dL
<1.0 mg/L: Low Cardiovascular Disease Risk
1.0 - 3.0 mg/L: Moderate Cardiovascular Disease Risk
>3.0 mg/L: High Cardiovascular Disease Risk
Infection and other acute illnesses can elevate CRP for up to 2 weeks.
If a patient's value is elevated, consider repeat testing after 2 weeks if clinically indicated.
Patients treated with carboxypenicillins (ticarcillin, aka Timentin) may have significantly decreased CRP values.
Day(s) Test Set Up
Monday through Sunday
Test Classification and CPT Coding
86141
Useful For
High sensitivity CRP measurements may be used for evaluation of conditions thought to be associated with inflammation, in otherwise healthy individuals and as an independent risk marker for the identification and stratification of individuals at risk for future cardiovascular disease.
Report Available
STAT within 1 hour of receipt. Routine within 2 hours of receipt.