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HelpTest Code CK Creatine Kinase, Total
Useful For
Creatine kinase (CK) is widely distributed in the tissues of the body, with greatest activity in skeletal muscle, heart muscle and the brain. Any damage to these tissues will result in increased excretion of CK into the blood stream. Some conditions that contribute to increased CK include Duchenne-type muscular dystrophy, myocardial infarction, central nervous system disorders, hypothyroidism, Reye's syndrome and other muscle trauma (surgery, injuries, severe exercise).
Synonyms/Keywords
CK, C. Kinase, CPK
Specimen Requirements
| Fasting Required | Specimen Type | Preferred Container/Tube | Acceptable Container/Tube | Specimen Volume | Specimen Minimum Volume (allows for 1 repeat) |
Pediatric Minimum Volume (no repeat) |
|---|---|---|---|---|---|---|
| No | Plasma/Serum | Lithium-heparin Plasma Separator (PST), Serum Separator Tube (SST) | Lithium or Sodium-heparin Green Top (GTT), Red Top Tube (RTT) | 1 mL | 0.5 mL |
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Plasma/Serum | Ambient | 5 days |
| Refrigerate | 7 days | |
| Frozen | 3 months |
Rejection Criteria
Samples collected with potassium oxalate, sodium citrate or sodium fluoride preservatives.
Test Information
Outpatient CK reference ranges vary considerably with physical activity and range up to 320 U/L for males and 230 U/L for females.
Reference Range Information
| Performing Location | Reference Range |
|---|---|
| All Performing Sites using Beckman AU | Male: 46-217 U/L Female: 33-157 U/L |
Marshfield Labs Performing Department
Marshfield Labs Chemistry
Performing Information
| Performing Location | Day(s) Test Performed | Analytical Time | Methodology/Instrumentation |
|---|---|---|---|
| Beaver Dam | Monday through Sunday | Less than 2 hours | IFCC-CK (NAC) Rate Assay/Beckman AU |
| Weston | Monday through Sunday | Less than 2 hours | IFCC-CK (NAC) Rate Assay/Beckman AU |
| Eau Claire | Monday through Sunday | Less than 2 hours | IFCC-CK (NAC) Rate Assay/Beckman AU |
| Park Falls | Monday through Sunday | Less than 2 hours | IFCC-CK (NAC) Rate Assay/Beckman AU |
| Ladysmith | Monday through Sunday | Less than 2 hours | IFCC-CK (NAC) Rate Assay/Beckman AU |
| Rice Lake | Monday through Sunday | Less than 2 hours | IFCC-CK (NAC) Rate Assay/Beckman AU |
| Marshfield | Monday through Sunday | Less than 2 hours | IFCC-CK (NAC) Rate Assay/Beckman AU |
| Minocqua | Monday through Sunday | Less than 2 hours | IFCC-CK (NAC) Rate Assay/Beckman AU |
| Neillsville | Monday through Sunday | Less than 2 hours | IFCC-CK (NAC) Rate Assay/Beckman AU |
| Stevens Point | Monday through Sunday | Less than 2 hours | IFCC-CK (NAC) Rate Assay/Beckman AU |
CPT Codes
| CPT | Modifier (if needed) |
Quantity | Description | Comments |
|---|---|---|---|---|
| 82550 | 1 |
Outreach CPT Codes
| CPT | Modifier (if needed) |
Quantity | Description | Comments |
|---|---|---|---|---|
| 82550 | 1 |
Ordering Applications
| Ordering Application | Description |
|---|---|
| Cerner | Creatine Kinase, Total |