Category
Routine Chemistry
Sub Category
Cardiovascular Risk Assessment
Synonyms/Aliases
Creatine Phosphokinase-mb; Ck Isoenzyme Mb
Abbreviations
CK-MB; CPK-MB
Type
INDIVIDUAL TEST
Results
RESULTS READY IN 2 - 3 HOURS
Method
SPECTROPHOTOMETRY
Temp
AMBIENT: 8HOURS; R (2-8℃): 7DAYS; F (-20℃): 30DAYS
Setup
ALL WORKING DAYS
Components Parameters
NOT APPLICABLE
PRE-ANALYTIC CONSIDERATIONS
Test Ordering Instructions
FILL OUT TEST REQUEST FORM FULLY & LEGIBLY.
Patient preparation
NOT APPLICABLE
Sample type
SERUM
Container/ preservative
SERUM SEPARATOR TUBE (SST/ GEL) OR PLAIN (RED TOP) VACUTAINER
Sample volume
AT LEAST 2 ML
Rejection criteria
HEMOLYZED SAMPLE; LABELING ISSUE (UNLABELED/ MISLABELED); MISSING REQUEST FORM; MISMATCH BETWEEN REQUEST FORM & SAMPLE DETAILS; MISSING AGE/ GENDER; WRONG SAMPLE TYPE; INSUFFICIENT SAMPLE; GROSS LIPEMIA; GROSS HEMOLYSIS.
Other Instructions
NOT APPLICABLE
Reference intervals
AGE & GENDER APPROPRIATE VALUES ARE PROVIDED ON THE REPORT.
Clinical Utility
TO DIAGNOSE OR RULE OUT HEART DISEASE E.G. HEART ATTACK (ACUTE MYOCARDIAL INFARCTION). HOWEVER TROPONIN IS A SUPERIOR BIOMARKER.
Test Limitations/ Confounders
PRESENCE OF MACRO CK CAN LEAD TO SPURIOUSLY INCREASED CK-MB LEVELS.