|Sample Requirement||Turnaround Time|
|Serum||Same working day|
Elevations are seen in the presence of acute muscle injury (eg exertional rhabdomyolysis, atypical myopathy, myositis, trauma, recumbency, vitamin E/selenium deficiency, HKPP) . Levels peak at 6-12 hours post injury and return to baseline by 3-4 days, assuming that no further damage occurs.
Artefactual increases can occur with haemolysis of the sample or muscle damage during collection.
Paired CK assays taken before and 2-3 hours after exercise can form a useful diagnostic test for exercise-induced myopathy.
This assay does not differentiate the skeletal muscle isotype from the cardiac or brain isotypes, but these are less likely to cause significant increases in the serum.
|Adult Non-Thoroughbred Horses||110-250|
|Neonatal Thoroughbred Foals (24-48hrs old)||165-761|
|Older Thoroughbred Foals (approx. 3 weeks old)||204-263|
|Yearling Thoroughbred Horses||190-370|
|Two-Year-Old Thoroughbred Horses in Training||166-572|
|Three-Year-Old Thoroughbred Horses in Training||156-875|
|Adult Thoroughbred Horses at Stud||154-270|