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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 or have had an effective immune response to vaccination. We offer comprehensive testing for IgM and IgG antibodies and spike protein antibodies, 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.
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
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.
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.
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%.
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.
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.
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.
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%.
Yes. Consider combining our COVID-19 antibody and diagnostic tests if:
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.
No. This test requires an SST. A standard SST can be used for collection, or US BioTek can provide collection kits.
At this time we are only able to offer our COVID-19 antibody tests to medical providers for in-clinic use.
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.
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.
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."
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.
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.
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."
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.
US BioTek Laboratories 16020 Linden Ave N, Shoreline, WA 98133, USA
Phone: 206.365.1256 · Toll Free: 877.318.8728 · Fax: 206.363.8790 · cservice@usbiotek.com
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