Test Overview
Test Methodology

Chemiluminescent Immunoassay (CLIA)

Test Usage

CSF levels of HCG are a useful aid in the diagnosis of primary central nervous system (CNS) germ cell tumors (GCTs), as well as an adjunct in the diagnosis of CNS metastases of germ cell tumors (both testicular and choriocarcinoma), and for monitoring recurrence after treatment of these tumors. Elevated levels of HCG in CSF indicate likely presence of one of these types of tumors. Quantitation of HCG in CSF can be important in guiding treatment or monitoring response to treatment.

Reference Range *

0 - 10 mIU/mL

Test Details
Days Set Up
Daily, 24 hours
Analytic Time

2 hours

Soft Order Code
BHCSF
MiChart Code
hCG, Beta CSF
Synonyms
  • HCG Beta Subunit, CSF
Laboratory
Chemical Pathology
Section
Automation
Specimen Requirements
Collection Instructions

Collect spinal fluid; refrigerate.

Normal Volume
0.5 mL CSF
Minimum Volume
0.25 mL CSF
Billing
CPT Code
84702
Fee Code
23305
LOINC
44001-6
NY State Approved
No