Why Private MD Labs?
90-day money-back guarantee Lab order in minutes Save a trip to the doctor Low prices since 2005 Labs within 2 miles
SARS-CoV-2 spike antibody test for checking past COVID-19 infection response

SARS-CoV-2 Spike Antibody Test - Past Infection Check

SARS-CoV-2 Total Antibody, Spike, Semi-Quantitative

  • Check for past COVID-19 infection
  • Detect your immune antibody response
  • Screen your prior exposure status
$702
First results as soon as overnight*

All results normal? Get your money back. First-time customers only. File a support ticket titled “Money Back Guarantee” with your order number within 15 days of receiving your results. STD, Sickle Cell, and gift orders aren’t eligible. Full terms apply. guarantee
No questions asked refunds
LegitScript certified

Prescription & all lab fees included

Go directly to the lab, no extra fees

Doctor's guidance included

Easy to understand results

Fast & convenient

Lab visit as quick as 10 mins in & out

  • Many results come back overnight *
  • 90-day money back guarantee
  • Save time & skip the doctor’s office
  • Lab visit as quick as 10 minutes
  • Results explained, with clear next steps
  • LegitScript certified
  • No questions asked refunds
  • The price you see is the price you pay
  • Many results come back overnight *
  • 90-day money back guarantee
  • Save time & skip the doctor’s office
  • Lab visit as quick as 10 minutes
  • Results explained, with clear next steps
  • LegitScript certified
  • No questions asked refunds
  • The price you see is the price you pay

What's this test for?

This test is ideal if you're wondering whether you've been infected with COVID-19 in the past, even if you never had symptoms or a positive test at the time. It looks for antibodies your immune system made in response to the virus's spike protein. This is not a test to diagnose a current, active infection.

What's included in this test?

This test measures total antibodies against the spike protein of SARS-CoV-2, which is the part of the virus your immune system targets after infection or spike-based vaccination. Looking at spike antibodies specifically helps identify whether your body has mounted an adaptive immune response, which is different from an active infection test that looks for the virus itself.

What happens after I get my results?

Your results will show up in your account along with an explanation of what a positive or negative antibody result means. If your result is positive, it generally means your immune system has responded to the virus or a spike-based vaccine at some point, but it does not tell you how protected you are from future infection, so continuing normal precautions is still wise. If you test negative but think you were previously infected, retesting later or pairing this with a current infection test may help clarify things. The standard lab report is downloadable from your account, and you can track any repeat testing over time using the trends feature.

How can I naturally support immune health?
Getting enough sleep, eating a diet rich in fruits, vegetables, and lean protein, and managing stress all help your immune system function well. Regular moderate exercise and staying hydrated also support your body's natural defenses. Avoiding smoking and limiting alcohol can further help your immune system stay strong.
When will I get my results?
Results are typically ready within about 7 days of your sample being collected. You'll receive a notification once your results are posted to your secure online account, where you can view and download your report.
Who should consider this test?
This test is a good fit for people who want to know if they were previously infected with COVID-19, including those who had mild or no symptoms at the time. It can also interest people who want to understand their antibody status after a suspected past exposure. It's not meant for people trying to find out if they're currently infected.
What symptoms indicate I may need this test?
You might consider this test if you had cold- or flu-like symptoms in the past and suspect it may have been COVID-19, even though you were never formally tested. It's also useful if you were around someone who tested positive and want to know if you developed an immune response. Current symptoms like fever, cough, or loss of taste and smell point to needing an active infection test instead, not this one.
What does a positive result mean?
A positive result means your immune system has produced antibodies against the spike protein, which usually points to a past infection or a spike-based vaccination. It does not measure how strong or long-lasting your protection is against getting infected again. Because of this, a positive result shouldn't change how carefully you follow current health guidance.
What does a negative result mean?
A negative result means the test didn't detect spike antibodies, which could mean you haven't been infected or vaccinated with a spike-based vaccine, or that antibody levels have dropped below a detectable level over time. Antibody levels naturally decline months after infection or vaccination, so a negative result doesn't rule out a past infection entirely. If you want more clarity, retesting or considering the timing of any prior exposure can help.
How often should I retest?
There's no strict schedule for retesting since this test is about past exposure, not ongoing monitoring. If you're curious how your antibody levels change over time, retesting every few months can show a trend, which you can follow using the trends feature in your account. Most people only need this test once unless they have a specific reason to check again.
How’s this work?
Getting your blood test with us is easy, private & backed by the power of science.

Long story short:
  1. In the test options, use the filters or search box to narrow your choices and find the test you want.
  2. If you need a hand navigating through options, text our super friendly support team at 754-799-7833, and we'll provide tailored suggestions to help you find the ideal test.
  3. Once your order is placed, we’ll create your doctor’s lab order remotely, without any need for you to make a trip to a doctor in person or to talk to the doctor. Expect to receive your doctor’s lab order right in your inbox. It will also be in your patient portal if you need to find it later. We’ll also include instructions regarding fasting and other requirements for your test. Your patient portal will be auto-created hassle-free during checkout.
  4. If this is your first time ordering, you'll be prompted to create a password for instant login access to your patient portal. It's a quick way to conveniently access your orders and results whenever you want.
  5. When you’re ready, visit one of our 4,000 locations. Just bring your ID – no printing or faxing of your lab order is needed, as your order and details will already be in the lab system.
  6. Note that most lab locations don’t accept walk-ins, so it’s best to book an appointment in advance. Don’t worry – we’ll provide detailed instructions along the way.
  7. You’ll get your results via email & SMS and dive into understanding your body better. Yup, that easy!
  8. If you have any questions, please text us at 754-799-7833 or email [email protected] and we'll gladly help you.
How do I know which test to get?
In the test options, find the test you want. If you’re not sure which test to get, we can lend a hand in finding the right option.

Just text or call us at 754-799-7833, email us at [email protected], and we'll gladly help you. We've got your back and reply quickly.
Is it possible to make changes to my lab order if I made a mistake with the name, date of birth, or any other details?
Absolutely! We totally understand that errors can happen. No worries, we're here to help you.

Just reach out to us via text at 754-799-7833 or shoot us an email at [email protected]. Remember to include your order number and let us know the correct information you’d like to update. Our awesome team will jump right in and make sure everything is sorted out and accurate for you.

There are no changes necessary if your address is wrong on the requisition though. We don’t mail anything out.

Our lab requires an address to be listed to generate an order.
Do you accept health insurance?
Only HSA & FSA is accepted.

Our services are strictly self-pay and cannot be submitted to your health insurance provider except for Health Savings Accounts or Flexible Savings Accounts.

This policy applies to all insurance companies, including federal health insurance programs like Medicare.

If you have any questions, please text us at 754-799-7833 or email [email protected].
Can I cancel my order?
Yes.

We get it – sometimes your needs change.

As long as your samples haven’t been collected yet, we’re happy to help you cancel your order.

If you have any further questions, please text us at 754-799-7833 or email [email protected].

You can read more about our cancellation policy here.
How can I find a lab location near me?
During the ordering process, you’ll be able to select a specific lab near you, with no strings attached! You can switch it up later easily and visit any of our authorized locations as long as it’s the same lab company you selected your test for (Quest Diagnostics or Labcorp).

Before you proceed with your order, feel free to browse through all our lab locations here. This will give you the peace of mind of knowing that there's a lab nearby your home, office or your favorite gym.

If you have any questions, please text us at 754-799-7833 or email [email protected] and we'll gladly help you.

Here’s why 1,000,000+ customers chose us for affordable hassle-free private blood testing.

You get clinical lab reports & simplified health insights.
Save time & gas, go straight to the lab. Our doctors cover the rest.
Results start landing the next day after your lab visit.*
We don’t sell or share your data. Your time & privacy matter.
US-licensed doctors have your back if things get unclear.
No hidden fees, nice discounts for regular checkups.
Save a trip to the doctor, go directly to the lab
Get lab order in minutes, results come overnight*
Results explained in simple language
Reviewed by US licensed doctors
Fast & confidential, we never sell or share your data
No insurance needed, transparent pricing
Demo results
SARS-CoV-2 Spike Antibody (Total) Positive
Demo results
Negative Positive
Positive

What this means

A positive result means your body has produced antibodies against the spike protein of SARS-CoV-2, suggesting past infection or vaccination with a spike-based vaccine. This does not measure how protected you are against future infection.

* Regular blood test results (e.g., CBC) typically start arriving the next business day after sample collection. More advanced tests may take longer due to complexity.
Here’s how easy it is to get blood work done on your terms
Choose a checkup
Order your test Save a trip to the doctor. Your results will come with clear, friendly explanations. Takes 2 minutes
Book a lab
Book an appointment Visit any of our 4,000 nearby lab locations to have your samples collected. Book or walk-in
Choose a checkup
Get results Receive a clear, easy-to-digest health report by email & SMS within a few business days. Get answers, fast

Find a lab near you

Search Quest Diagnostics and LabCorp locations available through Private MD Labs.

Find a lab

SARS-CoV-2 Spike Antibody Test - Past Infection Check

  • Check for past COVID-19 infection
  • Detect your immune antibody response
  • Screen your prior exposure status
$702
Still got questions? Text our super-cool support team at 754-799-7833 to get help finding your ideal checkup.
Ask Me Anything

Your 24/7 Personal Lab Guide

Hi. Tell me what you want to check. I'll find the right blood test for you.

Just now
For informational purposes only. Not medical advice.