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Creatine kinase

This test measures the amount of creatine kinase (CK) in a sample of your blood. CK is also called creatine phosphokinase (CPK).

Source: MedlinePlus, U.S. National Library of Medicine

Normal range

16 published ranges, each from a named source
Female · 18 y+
26–192 U/L
Male · 18 y+
39–308 U/L
Ranges from ARUP Laboratories Test Directory, Mayo Clinic Laboratories (Pediatric Test Catalog), Mayo Clinic Laboratories (Test Catalog).

All source ranges (16)
SourceSexAgeRange
ARUP Laboratories Test Directory Female ≤ 30 d 108–564 U/L
ARUP Laboratories Test Directory Female 1 mo – 5 mo 72–367 U/L
ARUP Laboratories Test Directory Female 6 mo – 3 y 38–261 U/L
ARUP Laboratories Test Directory Female 3 y – 6 y 40–222 U/L
ARUP Laboratories Test Directory Female 7 y – 17 y 46–250 U/L
ARUP Laboratories Test Directory Female 18 y+ 26–192 U/L
ARUP Laboratories Test Directory Male ≤ 30 d 108–564 U/L
ARUP Laboratories Test Directory Male 1 mo – 5 mo 72–367 U/L
ARUP Laboratories Test Directory Male 6 mo – 3 y 50–272 U/L
ARUP Laboratories Test Directory Male 3 y – 6 y 56–281 U/L
ARUP Laboratories Test Directory Male 7 y – 17 y 60–393 U/L
ARUP Laboratories Test Directory Male 18 y+ 39–308 U/L
Mayo Clinic Laboratories (Test Catalog) Female 3 mo+ 26–192 U/L
Mayo Clinic Laboratories (Pediatric Test Catalog) Female 3 mo+ 26–192 U/L
Mayo Clinic Laboratories (Test Catalog) Male 3 mo+ 39–308 U/L
Mayo Clinic Laboratories (Pediatric Test Catalog) Male 3 mo+ 39–308 U/L

What an abnormal result can be associated with

A high result
Elevated circulating creatine kinase activity
Associations from LOINC2HPO (Human Phenotype Ontology). This is reference information, not a diagnosis: only a clinician can interpret your result in context.
details
Sample
Serum or plasma · LOINC
Collection
Serum gel tube · 1 mL · Mayo Clinic Laboratories (Test Catalog)
Listed under
Heart Attack · Muscle Disorders · Muscular Dystrophy
Code
LOINC 2157-6 · U/L
Also known as
CPK, CK, Heart Disease
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