Lab comparison
Creatine Kinase (CK), Total: Quest vs LabCorp vs BioReference, tube, code & requirements
. This page shows collection requirements for all three major reference labs in one view, so you don’t have to cross-check three portals.
Always verify against your lab’s current collection manual before drawing.
Every value on this page is verified by a nurse practitioner in active clinical practice, not scraped from an automated source.
| Requirement | Quest Diagnostics | LabCorp | BioReference |
|---|---|---|---|
| Test code | 374 | 0068-7 | |
| Primary tube | Serum separator tube (SST) | Red-top tube, gel-barrier tube, or green-top (lithium heparin) tube. Do not use oxalate, EDTA, or citrate plasma. | SST Tube |
| Specimen type | 1 mL serum | Serum (preferred) or plasma | 1 mL SST Tube |
| Patient prep | Avoid exercise before venipuncture. Increases may be anticipated in the immediate postoperative period following surgical procedures involving incision through muscle. | Avoid exercise before venipuncture. Increases may be anticipated in the immediate postoperative period following surgical procedures involving incision through muscle. | Avoid exercise before venipuncture. Increases may be anticipated in the immediate postoperative period following surgical procedures involving incision through muscle. |
| Minimum volume | Minimum Volume 0.5 mL | Minimum Volume 0.7 mL (Note: This volume does not allow for repeat testing.) | Qty 1 |
Frequently asked questions
What is the Quest Diagnostics order code for Creatine Kinase (CK), Total?
The Quest Diagnostics order code for Creatine Kinase (CK), Total is 374.
What tube color does LabCorp use for Creatine Kinase (CK), Total?
LabCorp uses a Red-top tube, gel-barrier tube, or green-top (lithium heparin) tube. Do not use oxalate, EDTA, or citrate plasma. for Creatine Kinase (CK), Total.
Does Creatine Kinase (CK), Total require fasting?
Creatine Kinase (CK), Total patient prep: Avoid exercise before venipuncture. Increases may be anticipated in the immediate postoperative period following surgical procedures involving incision through muscle.. Always confirm with the ordering lab before the draw.
Data provenance
Source: Quest Diagnostics specimen collection manual, LabCorp directory of services, and BioReference laboratory collection guide.
Verified by: a licensed nurse practitioner in active clinical practice. Values are reviewed against each lab’s published collection requirements. Always confirm against your lab’s current manual before drawing.
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