COVID-19 Antibody Screen, IgG, Legacy Health East

Epic Code:LAB3258Epic Name:COVID-19 Antibody Screen, IgG
Synonyms:Coronavirus (2019-nCoV); SARS-CoV-2 IgG; CoV-2 IgG; COV19
Methodology:Chemiluminescent immunoassay
Turnaround Time:Performed Mon-Fri; results are reported within 1-2 days.

For use under an Emergency Use Authorization (EUA) Only.

Associated Links:

Abbott SARS-CoV-2 IgG Specificity and Sensitivity

Collection Instructions

Optimal Volume:2 mL
Minimum\Peds Volume:0.6 mL
Container:Red or gold (gel) (Green (lithium heparin, gel), Purple (EDTA), Red (no gel))
Causes for Rejection:Grossly hemolyzed, heat inactivated specimens, pooled specimens or specimens with obvious microbial contamination or fungal growth.

Serum and plasma should be free of fibrin, red blood cells, and other particulate matter. Specimens from patients receiving anticoagulant or thrombolytic therapy may contain fibrin due to imcomplete clot formation.

Processing and Shipping

Specimen Processing:Within 2 hours of collection, centrifuge and aliquot 2 mL; 0.2 mL minimum. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Stability:2 days at room temperature; 7 days refrigerated; 1 year frozen.
Test Performed at or Referral Lab Chemistry  (St. Joseph's)


Reference Range:Negative
Limitations:Negative results do not rule out SARS-CoV-2 infection, particularly in those who have been in contact with the virus. Folllow-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.

Positive results may be due to past or present infection with non-SARS-CoV-2 coronavirus strains, such as coronavirus HKU1, NL63, OC43 or 229E.

Immunocompromised patients who have COVID-19 may have a delayed antibody response and produce levels of antibody which may not be detected as positive by the assay.

Not for the screening of donated blood.
Use:Aid in identifying individuals with an adaptive immune response to SARS-CoV-2, indicating recent or prior infection. PCR testing should be ordered if a current infection is suspected.

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