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Alkaline phosphatase isoenzymes, CSF-994

Test info

Test name:

Alkaline phosphatase isoenzymes, CSF

Test number:

994

Excellian order number:

LAB994

Abbreviation:

MSO

Alternate names:

ALK PHOS, CSF

Useful for:

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

Specimen type:

Cerebrospinal fluid (CSF)

Collection container:

Sterile vial/container

Volume:

2.0 mL

Minimum volume:

1.0 mL

Processing instructions:

Freeze within two (2) hours of sample collection

Transport container:

Sterile vial

Transport and stability:

Frozen (preferred) – 1 month

Refrigerate – 1 week

Ambient – 2 hours

Performance

Performing lab:

ARUP (2005736) via LabCorp (009985): R-NX

Days set up:

Daily

TAT:

3 - 4 days

Method:

Quantitative Heat Inactivation/Enzymatic

Clinical and Interpretive info

Reference ranges:

Total alkaline phosphatase: 0 - 1 U/L

Billing

CPT codes:

84075
84080

Tracking

Date created:

07/27/2020

Revised date:

12/07/2023

Review date:

12/07/2023