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CE/IVD Marked

QuantiVirus™ Anti-SARS-CoV-2 IgG Test Kit



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The QuantiVirus™ Anti-SARS-CoV-2 IgG Test is an immunoassay test intended for the detection of anti-SARS-CoV-2 IgG from serum or plasma from individuals suspected of COVID-19 by their healthcare provider. This test is to check if the COVID-19 virus antibody is present due to virus infection.

Looking for the RT-PCR test (nucleic acid test for viral RNA) to detect current infection with SARS-CoV-2? 

Product Highlights

  • Outside of the US: CE/IVD Marked
  • US: For Research Use Only. Not for use in diagnostic procedures
  • High throughput: 78 samples per run
  • Sample type: Serum or EDTA plasma
  • Sample input: 10 uL
  • Turnaround time: 3 hours

Clinical specificity and sensitivity

  • Clinical specificity: 98.25% (95% CI: 95.97% to 99.43%) 
  • Clinical sensitivity: 96.77% (95% CI: 88.83% to 99.61%)

Validated Machines

Luminex 200 and MAGPIX

COVID-19 Hotline


Phone #: +1 510-878-6662, option 4 (tech support) 


Product Configuration


Kit Components

  • Capture beads 
  • 20x anti-human IgG antibody
  • Positive control and negative control 
  • Wash buffer and assay buffer
  • 96-well plate and plate seals

Pack Size

96-reaction per kit, 384-reaction per kit, 960-reaction per kit

*This product configuration image only shows the 96-reaction pack size. Please refer to product IFU for 384-reaction and 960-reaction pack size kit configuration.

How Does the QuantiVirus™ Anti-SARS-CoV-2 IgG Test Kit Work?

The QuantiVirus™ Anti-SARS-CoV-2 IgG Test is a two-step immunoassay using the Luminex MagPix® platform for the detection of anti-SARS-CoV-2 spike protein 1 (S1) RBD IgG antibody in human serum or plasma (EDTA) specimens. Recombinant spike protein 1 (S1) RBD is covalently coupled to the surface of MagPlex® Microspheres (also called “beads”) via a carbodiimide linkage.

First, S1 RBD coated beads and human specimens are mixed and incubated at room temperature for 1 hour, allowing the coated beads to capture the IgG antibodies present in human specimens.


After washing, Phycoerythrin (PE) conjugated anti-human IgG is added to reaction mixture and incubated at room temperature for 30 minutes.


After washing, PE fluorescence of each well in a 96-well plate is measured on Luminex MagPix® platform as Median Fluorescence Intensity (MFI).

Step 1

Capture beads and sample incubation at room temperature (1 hour)

Step 2

Anti-human IgG antibody incubation at room temperature (30 minutes)

Step 3

Plate reading & data acquisition

Assay Performance


Assay Precision

The average CV% of within run precision was 8.25% (from 4.71% to 11.74%). The average CV% of between-run precision was 10.47% (from 5.0% to 13.4%)


Assay Specificity

No cross-reactivity was observed to HIV, HAV, HBV, RSV, CMV EBV, Rubella, Influenza A, and Influenza B.


Clinical Performance

The total clinical specificity and sensitivity was 98.25% (95% CI: 95.97% to 99.43%) and 96.77% (95% CI: 88.83% to 99.61%), respectively

 Ordering Information

Customer Ordering Information

Product Name: QuantiVirus™ Anti-SARS-CoV-2 IgG Test 

96-Reaction Kit Catalog Number (CE/IVD Marked): DC-11-0022E
384-Reaction Kit Catalog Number(CE/IVD Marked): DC-11-0023E
960-Reaction Kit Catalog Number(CE/IVD Marked): DC-11-0024E

*This device/product is not EUA authorized and it is available in the United States for Research Use Only (RUO). Not for use in diagnostic procedures.

COVID-19 Total Solution

DiaCarta offers a COVID-19 total solution to support the fight against COVID-19, including the RT-PCR test, antibody IgG test, CLIA lab service, sample collection kits, RNA control and more. 

QuantiVirus™ SARS-CoV-2 Test Kit (Detects 3 genes)

QuantiVirus™ SARS-CoV-2 Multiplex Test Kit (Detects 1 gene)

QuantiVirus™ Anti-SARS-CoV-2 IgG Test Kit (Antibody Test)

COVID-19 Clinical Laboratory Testing Service

Nasopharyngeal and Oropharyngeal Sampling Collection Kit 

Need Help?

Call us: +1 (800) 878-6662

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