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HelpTest Code BHSF Beta-Human Chorionic Gonadotropin, Quantitative, Spinal Fluid
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
CSFSpecimen Required
Patient Preparation: For 12 hours before specimen collection, patient should not take multivitamins or dietary supplements (eg, hair, skin, and nail supplements) containing biotin (vitamin B7).
Container/Tube: Sterile vial
Specimen Volume: 1 mL
Collection Instructions: Submit specimen from collection vial number 1.
Specimen Minimum Volume
0.75 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| CSF | Refrigerated (preferred) | 28 days |
| Ambient | 14 days | |
| Frozen | 14 days |
Reference Values
<1.0 IU/L
Day(s) Performed
Monday through Saturday
CPT Code Information
84702
Report Available
1 to 3 daysSpecimen Retention Time
14 daysReject Due To
| Hemolysis | Reject |