SARS CoV 2 Spike Antibody, IgG

General Information

Lab Name
SARS CoV 2 Spike Antibody, IgG
Lab Code
NCVIGQ
Epic Name
SARS-CoV-2 Spike Antibody, IgG
Description

The Abbott Architect SARS-CoV-2 IgG II assay, run under an emergency use authorization from the FDA, is quantitative test designed to detect IgG antibodies to the spike protein of SARS-CoV-2 in serum and plasma from individuals with an adaptive immune response to SARS-CoV-2, indicating recent or prior infection. Results are reported as AU/mL.

Reactive (Positive, ≥50.0 AU/mL) results may be due to immunization or past or present infection with SARS-CoV-2. Results from antibody testing should not be used as the sole basis to diagnose or exclude SARS-CoV-2 infection or to inform infection status.

Nonreactive (Negative, <50.0 AU/mL) results do not rule out SARS-CoV-2 infection, particularly in those who have recently been in contact with the virus. Follow-up testing with a molecular diagnostic should be considered to rule out infection in these individuals. Results from antibody testing should not be used as the sole basis to diagnose or exclude SARS-CoV-2 infection or to inform infection status.

For Batteries containing NCVIGQ refer to:

SARS-CoV-2 Antibodies (NCVIGG, NCVIGQ)[NCVIGB], The qualitative detection of anti-Nucleocapsid IgG (NCVIGG) and the quantitative detection of anti-Spike IgG (NCVIGQ) antibodies.

For all questions, contact Client Support Services (available 24/7):

Phone: (206) 520-4600 or (800) 713-5198
Fax: (206) 520-4903
Email: commserv@uw.edu

The test order requisition is available online

Synonyms
SARS-CoV-2 (COVID-19) Antibody, SARS-CoV-2 (COVID-19) Serology
Components

Interpretation

Guidelines
Method

Chemiluminesence

Reference Range
See individual components
Ref. Range Notes

Per manufacture’s package insert protective level is ≥50.0 AU/mL.

Ordering & Collection

Specimen Type
Collection

Preferred: 5 mL blood in GOLD SST tube.
Also Acceptable: Orange RST, pearl PPT, serum from red top, plasma from EDTA tube.

Handling Instructions
  • Spin within 24 hours and prior to shipment.
  • sample is stable for 7 days at 2-8°C once separated from a clot or red blood cells, or in a gel separator tube.
  • If testing will be delayed more than 7 days store at -20°C or colder.

Send Specimens to:

UW Medicine
Department of Laboratory Medicine
Virology- Central Testing Lab
1602 Raymond Ave SW
Renton, WA 98057-3356
Tel: (206) 685-6656 opt 4

Quantity
Requested: Entire sample
Minimum: 0.5 mL serum

Processing

Receiving Instructions

Centrifuge GOLD SST tube and route to Virology Central Lab (Renton).

Centrifuge RED TOP or EDTA tube and aliquot serum/plasma into plastic aliquot tube. Route to Virology Central Lab (Renton).

Stability: Sample stable off the clot, red blood cells, or separator gel for 7 days at 2-8°C. If testing will be delayed more than 7 days store at -20°C or colder.

Misc Sendout

Performance

Lab Department
Central Lab Virology(RVIR)
Frequency
Mondays and Fridays, with results available on the same day.
Available STAT?
No
Performing Location(s)
CL Virology, Renton
206-685-6656

1602 Raymond Ave SW

Renton, WA 98057-3356

206-685-6656 opt 4

Billing & Coding

CPT Codes
86413
LOINC
94504-8
Interfaced Order Code
UOW4197