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HelpTest Code BHSF Beta-Human Chorionic Gonadotropin, Quantitative, Spinal Fluid
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Reporting Name
Chorionic Gonad Beta-Subunit QN,CSFSpecimen Type
CSFSpecimen Required
Patient Preparation: For 12 hours before specimen collection, do not take multivitamins or dietary supplements containing biotin (vitamin B7), which is commonly found in hair, skin, and nail supplements and multivitamins.
Container/Tube: Sterile vial
Specimen Volume: 1 mL
Collection Instructions: Submit specimen from collection vial 1.
Reject Due To
| Hemolysis | Reject |
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| CSF | Refrigerated (preferred) | 28 days | |
| Ambient | 14 days | ||
| Frozen | 14 days |
Specimen Minimum Volume
0.75 mL
Day(s) Performed
Monday through Saturday
Specimen Retention Time
14 daysReport Available
1 to 3 daysReference Values
<1.0 IU/L
Useful For
Aiding in the diagnosis of brain metastases of testicular cancer or extragonadal intracerebral germ cell tumors
CPT Code Information
84702
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| BHSF | Chorionic Gonad Beta-Subunit QN,CSF | 14041-8 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| BHSF | Chorionic Gonad Beta-Subunit QN,CSF | 14041-8 |
Forms
If not ordering electronically, complete, print, and send an Oncology Test Request (T729) with the specimen.