Alkaline phosphatase isoenzymes, CSF-994

Test info

  
Alkaline phosphatase isoenzymes, CSF
  
994
  
LAB994
  
MSO
  
ALK PHOS, CSF
  

Alkaline phosphatase may be increased in the CSF of patients with intracranial germ cell tumors. When increased, isoenzyme testing can identify if a heat-stable isoenzyme (ie, germ cell or placental) is present but cannot quantify the amount of activity.

Specimen

  
Cerebrospinal fluid (CSF)
  

Sterile vial

  
2.0 mL
  
1.0 mL
  

Sterile vial

  

Frozen (preferred) – 1 year

Refrigerate – 1 week

Ambient – NO

Performance

  
ARUP (2005736) via LabCorp (009985): R-NX
  
Daily
  
3 - 4 days
  

Quantitative Heat Inactivation/Enzymatic

Clinical and Interpretive info

  

Total alkaline phosphatase: 0 - 1 U/L

Billing

  
84075
84080

Tracking

  
07/27/2020
  
08/05/2020
  
08/05/2020