Chat
Alkaline Phosphatase Isoenzymes, CSF
Copy Utility
Ordering Recommendation
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.
Mnemonic
Methodology
Quantitative Heat Inactivation/Enzymatic Assay
Performed
Sun-Sat
Reported
1-3 days
New York DOH Approval Status
Specimen Required
CSF.
Transfer 2 mL CSF to an ARUP Standard Transport Tube and refrigerate or freeze ASAP or within 2 hours. (Min: 1 mL)
Refrigerated or frozen.
Specimens collected in EDTA, potassium oxalate, sodium citrate, or sodium fluoride. Grossly hemolyzed or lipemic specimens
After separation from cells: Ambient: 2 hours; Refrigerated: 1 week; Frozen: 1 month
Reference Interval
Effective January 17, 2012
Total Alkaline Phosphatase: 0-1 U/L
Interpretive Data
This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.
Laboratory Developed Test (LDT)
Note
Hotline History
CPT Codes
84075; 84080
Components
| Component Test Code* | Component Chart Name | LOINC |
|---|---|---|
| 2005737 | CSF Alkaline Phosphatase Total | |
| 2005738 | CSF Alk Phos Bone Calc | |
| 2005739 | CSF Alk Phos Liver Calc | |
| 2005740 | CSF Alk Phos Other Calc |
Aliases
- ALK PHOS
- Alkaline Phosphatase
- Alkp
Feedback
