COVID-19 Spike Protein Antibody Tests

Serological testing to quantify vaccine immune response. 

COVID-19 Antibody Test

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

 

Serological COVID-19 spike protein antibody testing can identify individuals who have been exposed to the SARS-CoV-2 virus, regardless of symptom presentation, and quantify their personal immune response. We offer two testing options for the S-RBD antibody (spike protein receptor binding domain), the target of current COVID-19 vaccines due to the S-RBD antibodies ability to block the passage of COVID-19 to cells. The tests are optimized for pre and post vaccination testing, to deliver the information your patients need based on their individual circumstances.

When combined into a pre/post vaccination assessment, the COVID-19 Immune Response Panel and the COVID-19 Vaccine Response Screen provide clarity into not only when an individual should receive a vaccine, but the effectiveness of their body's immune response to the inoculation.

COVID-19 Immune Response Panel

  • Evaluates antibodies against the nucleocapsid (N) protein and provides a single positive or negative result.

  • Evaluates S-RBD antibody and provides both a positive/negative result and a semi-quantitative estimate.

  • Best for patients who want to understand if they have a current or previous COVID-19 infection and/or establish a pre-vaccine baseline immune response.

  • Can help determine the ability of an individual's immune system to fight off a new COVID-19 exposure.

COVID-19 Vaccination Response Screen

  • Evaluates S-RBD antibody and provides both a positive/negative result and a semi-quantitative estimate.

  • Best for patients who have fully completed the vaccination process.

  • Can confirm a successful antibody production response to the COVID-19 vaccination when performed after a pre-vaccination COVID-19 Immune Response Panel.

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

Each test is performed using a Roche enzyme-amplified chemiluminescence platform (CLA) to detect even exceptionally small amounts of SARS-CoV-2 antibodies. The CLA technique features higher sensitivity than conventional ELISA or rapid lateral flow tests and was purposely selected based on our 30+ years of experience in immunoassay development. We are confident this process provides the most accurate results.

These tests are FDA authorized for emergency use.

 

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 reports for our COVID-19 Spike Protein Antibody tests clearly indicate if S-RBD antibodies are present and, when tested for, indicates whether IgG and IgM levels are reactive. The reports also include important information about the test.

 

View Sample Report

 

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. 99% 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?

Antibody tests are not considered diagnostic for COVID-19. The COVID-19 Immune Response Panel measures IgM antibodies which can rise during an active infection.

If an individual is symptomatic or has been recently exposed to COVID-19 we suggest following up with a molecular diagnostic assay to rule out infection in these individuals.

 

Are these tests FDA-approved?

Our COVID-19 Immune Response Panel and COVID-19 Vaccination Response Screen have been FDA-authorized for emergency use.

 

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 Immune Response Panel has an overall specificity of 99.8% and a sensitivity of 100% at >14 days post-infection.

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?

If you have US BioTek serum kits that contain SST tubes they may be used for Antibody test collection. If your kits contain a plain red-top tube and a serum transfer tube, then the kits cannot be used for the spike protein tests.

Click here to request new 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.