COVID-19 Antibody

Tests

Serological testing detects IgM and IgG antibodies to SARS-CoV-2. 95% of results are available in 24 hours after our lab receives specimen.

COVID-19 Antibody Test

About  |  Testing Process  |  Specimen Collection  | Sample Reports |  FAQs  |  How to Order 

 

Serological COVID-19 Antibody Testing can identify individuals who have been exposed to the SARS-CoV-2 virus, whether they have presented symptoms or not. We offer comprehensive testing for IgM and IgG COVID TAT-1antibodies, with three options to deliver the information your patients need based on their individual circumstances.

Each is performed using enzyme-amplified chemiluminescence technology, which features higher sensitivity than conventional ELISA or rapid lateral flow tests. We purposely selected this platform based on our 30+ years of experience in immunoassay development, and are confident it provides the most accurate results available for COVID-19 antibody testing.

COVID-19 Antibody Screen


  • Evaluates IgG and IgM antibodies together and provides one positive or negative result

  • Performed on a Roche electro chemiluminescent immunoassay

  • Best for patients who are asymptomatic and want to understand if they have had previous exposure to COVID-19

  • FDA-Approved for Emergency Use

COVID-19 IgG + IgM Antibody Panel

  • Evaluates IgG and IgM antibodies separately and provides individual positive or negative results

  • Performed on a Diazyme chemiluminescent immunoassay

  • Best for patients who are symptomatic, have a history of symptoms, or may have been exposed to COVID-19 in the past one to two weeks

  • Can help determine current stage of COVID-19 infection

COVID-19 Antibody Screen with IgG + IgM Reflex Panel

  • Positive Antibody Screen results are tested again on the second system to provide highest assurance of positive results

  • Patient specimen is first run through our COVID-19 Antibody Screen

  • If the result of the Antibody Screen is positive, the specimen is then run through the COVID-19 IgG + IgM Antibody Panel

  • Results from both tests are provided

Assess Patient Vulnerability to COVID-19

Assess Patient Vulnerability to COVID-19

Advanced Chemiluminescence Technology

Advanced Chemiluminescence Technology

Fast Turnaround Time

95% of Results Available in 24 hours

 

Testing Process

We run our COVID-19 antibody tests on high-precision immunoassay analyzers that utilizes enzyme-amplified chemiluminescence technology (CLA). The SARS-CoV-2 IgM/IgG CLA utilizes this highly sensitive technique to detect even very small amounts of IgM and IgG antibodies for SARS-CoV-2. These machines are developed and manufactured in the US and offer the most accurate IgM and IgG coronavirus testing currently available.

The COVID-19 Antibody Screen has an overall specificity of 99.8% and a sensitivity of 100% at >14 days post infection.

In a human study of COVID-19 patients, the COVID-19 IgG + IgM Antibody Panel was found to have a clinical sensitivity of 95.5% and a clinical specificity of 96%.

 

COVID-19 Antibody Testing Process

Specimen Collection

This test requires a serum specimen. US BioTek supplies collection kits free of charge to licensed practitioners with a US BioTek account.

Collection by a standard SST is also acceptable.

 

View Collection Instructions

 

COVID-19 Antibody Testing Specimen Collection

Sample Reports

Our reports are straightforward and easy to read, so you and your patient can focus on follow up care. The report for our COVID-19 Antibody tests clearly indicates if IgG and IgM levels are reactive and includes important information about the test.

 

View Sample Reports

 

COVID-19 Antibody Testing Sample Report

Frequently Asked Questions

How long does it take to get test results?

Once the specimen has been received by our lab, you can expect test results in 24-48 hours. 95% of results are available in 24 hours and 5% in 48 hours. You will be able to view the results via our online portal.

Do these tests indicate an active COVID-19 infection?

No. These tests detect IgG/IgM antibodies in the blood. An Ig response signals the development of immunity and can indicate prior exposure to the virus or recovery from mild cases.

Negative results do not always rule out SARS-CoV-2 infection, particularly in those who have been in recent contact with the virus. Follow-up testing with a molecular diagnostic assay should be considered to rule out infection in these individuals.

Are these tests FDA-approved?

Our COVID-19 Antibody Screen has been FDA-authorized for emergency use.

 

Our COVID-19 IgG + IgM Antibody Panel has not yet been reviewed by the FDA. However, it can be used in clinical laboratories by health care professionals following the FDA Policy for Diagnostic Tests for Coronavirus Disease-2019 (COVID-19) during the Public Health Emergency.

What are the sensitivity and specificity of these tests?

We use state-of-the-art, highly sensitive chemiluminescent platforms to run these tests. These machines are developed and manufactured in the US and offer the most accurate IgM and IgG coronavirus antibody testing currently available.

 

The COVID-19 Antibody Screen has an overall specificity of 99.8% and a sensitivity of 100% at >14 days post infection.

 

In a human study of COVID-19 patients, the COVID-19 IgG + IgM Antibody Panel was found to have a clinical sensitivity of 95.5% and a clinical specificity of 96%.

Can these tests be combined with the COVID-19 Diagnostic Test?

Yes. Consider combining our COVID-19 antibody and diagnostic tests if:

  • Swab collection is difficult
  • There is a history of COVID-19 symptoms, but subsequent recovery
  • You have concerns about a patient’s ability to mount an immune response to the virus

Can these tests be used for children?

There is evidence that this type of test is not as accurate for children. We do not recommend using these tests for children under the age of 2, or children of any age that are currently breastfeeding.

 

Can I use my existing US BioTek serum collection kits?

No. This test requires an SST. A standard SST can be used for collection, or US BioTek can provide collection kits.

Do I need to have an account before I can order COVID-19 Antibody Tests?

Yes. We invite licensed healthcare providers to set up an account with us. Our services can be ordered by a healthcare provider who is authorized under his or her scope of practice to order tests and interpret results for the purposes of diagnosis and decisions regarding patient treatment.

 

Create Account

 

I am a patient. Can I order a COVID-19 test from you?

At this time we are only able to offer our COVID-19 antibody tests to medical providers for in-clinic use.

Why use US BioTek Laboratories?

We are a CLIA accredited medical laboratory based in Shoreline, Washington. We employ the latest laboratory technology, advanced automation, and a dedicated research team to ensure the accuracy and reproducibility of every test. We've applied 30+ years experience in laboratory science to refine and optimize the procedures we follow in our tests, resulting in more meaningful and reliable information for providers and patients. 

How to Order COVID-19 Antibody Tests

  • Step 1: Create a US BioTek Account

     

    If you do not yet have one, create a US BioTek Laboratories account. It's easy and free of charge.

    Create Account

  • Step 2: Request Specimen Collection Kits

     

    Already have a US BioTek account?  The next step is to make sure you have appropriate collection materials.

    If you have SSTs on hand, you may use these  (please review our instructions for collection and shipping). Alternatively, you can request collection kits from US BioTek. These are available free of charge to licensed practitioners with a US BioTek account. 

    Request Collection Kits

  • Step 3: Download Requisition Form

     

    Upon completion of specimen collection, complete the requisition form included in your test kit and include it in your specimen shipment. You can also complete and print our online interactive PDF form.

    How to complete the requisition form:

    • Print patient’s name legibly, last name first.
    • Print patient’s address, age, sex, date of birth and phone number(s).
    • Record specimen collection date, collection time, date specimen is shipped, and storage conditions if the specimen is not mailed immediately after collection (i.e. ambient temperature, frozen, refrigerated).
    • Clearly mark the requested test panel(s).
    • Sign the requisition form (must be signed by the ordering practitioner).
    • Select the appropriate billing option and supply credit card information, if applicable. No other information is required when practitioner marks “bill practitioner."

    Download Requisition Form

  • Need More Information?

     

    Fill out the form below to request pricing information, specimen requirements, and to submit questions about our COVID-19 Antibody Tests. Our team will follow up with you quickly.

 
  • Step 1: Create a US BioTek Account
  • Step 2: Request Specimen Collection Kits
  • Step 3: Download Requisition Form
  • Need More Information?

Step 1: Create a US BioTek Account

 

If you do not yet have one, create a US BioTek Laboratories account. It's easy and free of charge.

Create Account

Step 2: Request Specimen Collection Kits

 

Already have a US BioTek account?  The next step is to make sure you have appropriate collection materials.

If you have SSTs on hand, you may use these  (please review our instructions for collection and shipping). Alternatively, you can request collection kits from US BioTek. These are available free of charge to licensed practitioners with a US BioTek account. 

Request Collection Kits

Step 3: Download Requisition Form

 

Upon completion of specimen collection, complete the requisition form included in your test kit and include it in your specimen shipment. You can also complete and print our online interactive PDF form.

How to complete the requisition form:

• Print patient’s name legibly, last name first.
• Print patient’s address, age, sex, date of birth and phone number(s).
• Record specimen collection date, collection time, date specimen is shipped, and storage conditions if the specimen is not mailed immediately after collection (i.e. ambient temperature, frozen, refrigerated).
• Clearly mark the requested test panel(s).
• Sign the requisition form (must be signed by the ordering practitioner).
• Select the appropriate billing option and supply credit card information, if applicable. No other information is required when practitioner marks “bill practitioner."

Download Requisition Form

Need More Information?

 

Fill out the form below to request pricing information, specimen requirements, and to submit questions about our COVID-19 Antibody Tests. Our team will follow up with you quickly.