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HelpTest Code COVIDGAB SARS-CoV-2 Antibody, IgG
Performing Laboratory
Northwell Health Laboratories
Methodology and Reference Values
| Instrument | Methodology | Anti-SARS-CoV-2 Antibody Interpretation |
| Inova Quantilink/QL 3000 | Euroimmun ELISA | Negative </= 0.7 Ratio |
| Equivocal 0.8 - 1.0 Ratio | ||
| Positive >/= 1.1 Ratio | ||
| Dynex DSX | Ansh Labs ELISA | Negative </= 9.9 AU/mL |
| Equivocal 10.0 - 12.0 AU/mL | ||
| Positive >/= 12.1 AU/mL | ||
| Abbott Architect | Abbott CMIA | Negative </= 1.3 Index |
| Positive >/= 1.4 Index | ||
| Diasorin Liaison XL | Diasorin CMIA | Negative </= 14.9 AU/mL |
| Positive >/= 15.0 AU/mL | ||
| Ortho Vitros 3600 | Ortho Immunometric IgG | Negative </= 0.9 Index |
| Positive >/= 1.0 Index | ||
| Roche 801 | Roche ECLIA Total (GAM) Ab | Negative </= 0.9 Index |
| Positive >/= 1.0 Index |
Test Classification and CPT Coding
86769
Specimen Requirements
Container/Tube: Gold top tube, Red top tube or MInt Green Lithium Heparin
Specimen: 1.0 mL serum or plasma (0.5 mL min)
Transport Temperature: Refrigerated
Stability: 24 Hrs Room Temperature
14 Days Refrigerated
6 Months Frozen
Day(s) and Time(s) Performed
Sunday - Saturday
TAT: 2 Days
Computer Interface Code
PDM # 2057204
Interpretive Data
This test has not been reviewed by the FDA. It has been validated to be accurate
by Northwell Health Laboratories.
Negative results do not rule out SARS-CoV-2 infection, particularly in those
who have 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.
Positive results may rarely be due to past or present infection with non-SARS-CoV-2 coronavirus strains, such as coronavirus HKU1, NL63, OC43, or 229E.
Northwell Health Laboratories, through extensive validation testing, has confirmed that this risk is minimal with this test