UW Hospital and Clinics Lab Test Directory
| Test Name: |
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C-Reactive Protein
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| Test Code(s): |
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CRP / CRPN
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| CPT Code(s): |
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86140
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| Methodology: |
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Nephelometry
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| Request Form: |
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UWHC DOWNTIME Laboratory Request Form (UWH IPDOWNTIME, 4004202); Write in test if not on form.
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| Days Performed: |
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Daily, 24 hours.
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| Turnaround Time: |
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Stat: 1 hour.
Routine: 4 hours.
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Specimen Requirements
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| Specimen: |
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Blood
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| Collection Container: |
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Preferred: Green cap with yellow ring (PST)
Also Acceptable:
Green top,
Red cap with yellow ring (SST),
Red top
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| Collection Volume: |
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Preferred: 1 mL
Pediatrics: 0.4 mL
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| Sample Analyzed: |
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Plasma or serum
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| Volume Required: |
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Preferred: 0.5 mL
Pediatrics: 0.2 mL
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| Specimen Processing: |
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Centrifuge. If a complete barrier has not formed, transfer cell-free plasma/serum to plastic vial. Refrigerate.
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| Specimen Transport: |
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Transport specimen to UWHC Core Laboratory (B4/220). Transport with coolant pack if coming from outreach location.
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| Stability: |
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Refrigerated: 8 days
Frozen: 8 months
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Interpretation
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Reference Interval:
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18 years and up: 0-1 mg/dL
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| Additional Information: |
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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.
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CRP Inflammation C Reactive Protein Inflammation
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