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Creatine Kinase with Reflexive Isoenzymes by Electrophoresis, CSF

Important Note

This test is usually requested in cases of known or questionable CNS damage.

Test includes a total CK (performed at the UW). If CSF Creatine Kinase result is >88 IU/L, quantitation of isoenzymes by electrophoresis (CCKI) will be reflexively added and performed at an additional charge.

Clinical System Name

Miscellaneous Test

Synonyms

CK-BB; CK Isoenzymes by Electrophoresis;

Sample Requirements

Specimen: Cerebrospinal Fluid (CSF)

Container(s): CSF Tube

Preferred Vol: 1.0 mL

Minimum Vol: 0.5 mL

 

Note: 

Processing Instructions

Reject due to: see below.

Spin: Y

Aliquot: Y

Temp: 2 - 4°C

Storage location: If red cells are present, centrifuge and transfer clear CSF to new tube. Refrigerate sample in the CPA refrigerator.

 

Off-site collection:  If red cells are present, centrifuge and transfer clear CSF to new tube. Refrigerate sample for transport.

Stability

Specimen Type Temperature Time
  RT  
  2 - 4°C  
  -20°C or -70°C  

 

Availability

STAT Performed TAT
N Daily, Batches run at UW Lab by 11 AM 1 - 5 d

 

Performing Laboratory

University of Washington

Dept of Laboratory Medicine

HMC Special Chemistry Lab

325 9th Ave, Rm # GWH-47,
Seattle, WA 98104

Phone Number: (206) 520-4600

Department

Department: Sent Outs

Phone Number: (206) 987-2563

CPT Codes

82550 (CK, total)

82552 (CK, Isoenzymes)

 

Methodology

Method: None specified

Analytical Volume: 0.5 mL CSF

Limitations:

Reference Range

No established reference ranges, but units are in U/L.
 

Send Out Instructions

Reference Test Name:

Creatine Kinase with Reflexive Isoenzymes by Electrophoresis, CSF
Reference Test Number: CCK
Instructions: Send out M - F with the UW courier.