C-reactive protein (CRP)

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Test Name:

C-reactive protein (CRP)

Collection Device/Tube Type:

1. EDM Base Lab: 5 mL blood - GOLD SST (gel)
2. CGY DSC: 4.5 mL blood - MINT LIHEP PST (gel)
3. NOTE: The preferred tube type at each testing site is acceptable at the alternate site

Submission Requirements:

1 mL serum or lithium heparin plasma

Frequency of Testing:

Daily

Reference Range:

< 8.0 mg/L

Note: C-reactive protein levels < 8.0 mg/L are not usually associated with infections

Comments:

In most cases, C-reactive protein (CRP) is the preferred test over ESR.
If an ESR is ordered, the laboratory will substitute the ESR request with a CRP. The ESR will be cancelled.
For more information, refer to:
C-Reactive Protein Substitution for Erythrocyte Sedimentation Rate (Lab Bulletin - 06 December 2017) and
C-Reactive Protein (CRP) Substitution for Erythrocyte Sedimentation Rate (ESR) (Memo, October 2017)

Last Reviewed:

03 May 2023

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