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Platelet antibody test for unexplained bruising, bleeding, or low platelet counts

Platelet Antibody Test for Unexplained Bruising & Low Platelets

Platelet Antibody, Direct (IgG)

  • Detect immune causes of low platelets
  • Check unexplained bruising and bleeding
  • Monitor autoimmune platelet destruction risk
$899
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

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

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

What's this test for?

This test is ideal if you're experiencing unusual bruising, unexplained bleeding, tiny red spots on your skin, or if a recent blood test showed a low platelet count. It looks for antibodies your body may be mistakenly making against your own platelets, which can cause them to be destroyed faster than your body can replace them. It's often used to help understand the cause of low platelet counts linked to conditions like ITP or other autoimmune issues.

What happens after I get my results?

Your results will be available in your account, with the normal reference range explained next to your value so you know exactly where you stand. If your antibody level is elevated, next steps typically include retesting to confirm the finding and watching for symptoms like unusual bruising or bleeding that would need urgent attention. A downloadable standard lab report is available from your account at any time, and you can track this result alongside future tests using the trends feature to see how things change over time.

Who should consider this test?

Anyone with unexplained bruising, small red or purple skin spots, frequent nosebleeds, or bleeding gums should consider this test. It's also useful if a previous blood count showed low platelets and you want to understand whether an immune reaction is the cause. People with autoimmune conditions like lupus or Hashimoto's thyroiditis, or those with certain cancers, may also want this test since low platelets can show up alongside those conditions.

What symptoms indicate I may need this test?
Watch for easy or unusual bruising, tiny reddish-purple dots on the skin (called petechiae), bleeding gums, frequent nosebleeds, or blood in urine or stool. Unusually heavy menstrual periods or bleeding that takes a long time to stop can also be signs. If you've had a routine blood test that came back with a low platelet count, this test can help explain why.
How can I naturally support healthy platelet levels?
Eating foods rich in vitamin B12, folate, and iron — like leafy greens, eggs, and lean meats — supports healthy blood cell production. Staying well hydrated and avoiding excess alcohol can also help your body maintain normal platelet function. Getting enough rest and managing stress supports overall immune balance, which matters since this condition often involves the immune system attacking platelets. These steps support general health but won't reverse an immune-related platelet problem on their own, so retesting is still important.
When will I get my results?
Results are typically ready within about 7 days of your sample being collected at the lab. You'll get a notification as soon as they're posted to your secure account, where you can view your value alongside the normal range.
What does high platelet antibody (PAIgG) mean?
A high or positive PAIgG result suggests your immune system is producing antibodies that attach to your platelets, marking them for destruction. This is commonly seen in conditions like autoimmune thrombocytopenia purpura (ITP), lupus, and some cancers or thyroid conditions. On its own, this result doesn't diagnose a specific condition — it's usually considered alongside your platelet count and other findings.
What causes elevated platelet antibodies?
Elevated platelet antibodies are most often linked to autoimmune conditions where the immune system mistakenly targets the body's own platelets, such as ITP or lupus. They can also show up with certain infections like HIV, some cancers including lymphoma and Hodgkin's disease, and thyroid conditions like Hashimoto's thyroiditis. Certain medications can also trigger this immune response in some people.
How often should I retest?
If your first result is elevated, retesting after a few weeks is a reasonable step to confirm the finding and check whether the level is rising, falling, or stable. If you're being monitored for an ongoing condition affecting your platelets, retesting every few months — or as symptoms change — can help track your progress. Use the trends feature in your account to easily compare results over time.
What should I do if my results are abnormal?
If your result is elevated, keep track of any bruising, bleeding, or new symptoms and consider retesting to confirm the level. If you notice heavy or uncontrolled bleeding, blood in your urine or stool, or bruising that appears without any cause, seek medical care right away since this can signal a more serious drop in platelets. For milder or borderline results, monitoring symptoms and retesting periodically is a reasonable first step.
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
Platelet-Associated IgG (PAIgG) Elevated
Demo results
Normal Elevated
Elevated

What this means

This result shows a higher-than-normal level of antibodies attached to your platelets, which can mean your immune system is mistakenly targeting them. This pattern is often seen in conditions like ITP or other autoimmune-related low platelet counts. It's usually interpreted together with your platelet count and any symptoms you're having.

* 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.

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Platelet Antibody Test for Unexplained Bruising & Low Platelets

  • Detect immune causes of low platelets
  • Check unexplained bruising and bleeding
  • Monitor autoimmune platelet destruction risk
$899
Still got questions? Text our super-cool support team at 754-799-7833 to get help finding your ideal checkup.
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For informational purposes only. Not medical advice.