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VRDL Test Page - SARS CoV-2 Neutralizing Antibody Test

Viral and Rickettsial Disease Laboratory

Test Order
SARS CoV-2 - Neutralizing Antibody Test

Information Category	Information Detail
Pre-Approval	None
Supplemental Information Requested	Requested: Vaccination status: vaccine manufacturer and administration date(s)
Submittal Form	Specimens must be accompanied with a hard copy of the completed VRDL General Purpose Specimen Submittal Form (PDF) or a form generated in the VRDL Lab Web Portal.
Methodology (Commercial Test Name or Laboratory Developed Test (LDT))	Plaque Reduction Neutralization Test (LDT)(Surveillance Use Only) Or Microneutralization Test (LDT)(Surveillance Use Only)
Reflex Testing	TBD
Acceptable Specimen Type(s) and Collection Method	Human specimens: Serum: Plain Red-Top Tubes: Serum collected in plain, red-top tubes must be separated and transferred to sterile, screw-cap tubes for storage and transport. Serum Separator Tubes (SST): SST may be transported after centrifugation. CSF: Collect CSF in sterile, screw-cap tubes
Minimum Volume Requested	Serum: 0.5 mL Whole blood in serum separator tubes: 5-8 mL CSF: 1 mL
Transport Medium (if using)	Not Applicable
Specimen Labeling	Each specimen tube must be labeled with at least two unique patient identifiers, e.g., patient full name and date of birth.
Storage & Preservation of Specimen / Shipping Conditions	Separated Serum: Refrigerate or freeze separated serum promptly after collection. Serum Separator Tubes: Refrigerate, do not freeze. CSF: Refrigerate or freeze CSF promptly after collection. Ship refrigerated specimens to VRDL on cold packs. Ship frozen specimens to VRDL on dry ice.
Shipping Instructions	Work with your local public health department to ensure samples are packaged according to instructions for Biological Substance – Category B (UN 3373) shipment. Ship specimens and a hard copy of the completed submittal forms to: CDPH VRDL ATTN: Specimen Receiving 850 Marina Bay Parkway Richmond, CA 94804 Phone: 510-307-8585
Turnaround Time	16 Business Days
Limitations	This test has not been validated for diagnostic purposes.
Additional Information
VRDL Points of Contact	Medical and Epidemiology Liaisons: (510) 307-8585 or VRDL.submittal@cdph.ca.gov