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Lab Test Dictionary



Electrochemiluminescent Immunoassay for Isenzyme MB


CK-MB; CKMB; CPK MB; CPK-MB; CPKMB; Creatine Kinase MB; MB Isoenzyme

Specimen Type


Performing Lab

UCSD Hillcrest

Epic ID

Other Reference Test

Lab Test Days


Standard TAT

4 Hours (from receipt of sample)

Stat TAT

1 hr

Collection Information

Specimen Required

2-6 mL Blood

Container Type

Lithium Heparin (Light Green-Top) Tube (PST)

Collection Instructions

0.5 mL green microtainer is also acceptable.

Processing Information - Lab Use Only

Specimen Stability

Room Temp: 5 Hours; Refrigerated: 12 Hours; Frozen: 3 Months

Rejection Criteria

Lipemic or grossly hemolyzed specimens; Specimens containing particulate matter or exhibiting obvious microbial contamination; Specimens that have been improperly collected, stored, or transported; Specimens that have been stabilized with azide; Specimens that have been heat-inactivated; Specimens exposed to repeated freeze-thaw cycles; Specimens that have not been centrifuged within 2 hours of collection; Unlabeled or mislabeled specimens

Test Volume Required

3 mL Plasma

Minimum Test Volume

1 mL Plasma or 0.5 mL Plasma for Infants

Processing Instructions

Blood specimens collected in Plasma Separator Tubes (PSTs) must be centrifuged within 2 hours of the collection time for optimal sample integrity. Complete a UCSD Clinical Laboratory requisition and submit with specimen refrigerated. Call a RUSH pick-up with TForce.

CPT Codes