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
Thrombin Clotting Time test for evaluating blood clotting and anticoagulant drug effects

Thrombin Clotting Time Blood Test

Thrombin Clotting Time

  • Check how fast blood clots
  • Screen for blood-thinning drug effects
  • Monitor unexplained bruising or bleeding
$205
LegitScript certified merchant
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

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, prolonged bleeding, or if you're being monitored while on blood-thinning medication. It helps check how well your blood is able to clot and whether certain anticoagulant drugs like heparin are affecting your clotting process. It's also useful if you have unexplained clotting problems that need further investigation.

What happens after I get my results?

Your results will be available in your account, with the normal range for thrombin clotting time clearly explained next to your value. If your result falls outside the expected range, the report will outline simple next steps, such as retesting or watching for symptoms like unusual bleeding or bruising. You can download a standard lab report directly from your account at any time. If you test regularly, you can also track your results over time using the trends feature to see how your clotting activity changes.

Who should consider this test?

People who are on anticoagulant medications like heparin or direct thrombin inhibitors and need to confirm the drug is working as expected should consider this test. It's also useful for anyone with a personal or family history of fibrinogen disorders or unexplained bleeding and bruising. If you've had abnormal coagulation results on another test, this one can help clarify what's going on.

What symptoms indicate I may need this test?
Symptoms like frequent or unexplained bruising, nosebleeds that won't stop, bleeding gums, or heavier than normal bleeding from small cuts can all be signs worth checking. Prolonged bleeding after surgery or dental work is another common reason people look into their clotting function. If you've noticed any of these along with taking blood-thinning medication, this test can help clarify what's happening.
When will I get my results?
Results for this test are typically ready within about 7 days of your sample being collected. Once ready, you'll be notified and can log into your account to view the full report. The report will explain your result and what it means in plain language.
What is fibrinogen and why does it matter?
Fibrinogen is a protein made by your liver that your body uses to form blood clots and stop bleeding. When you get a cut, fibrinogen is converted into fibrin, which creates the mesh that seals the wound. Too little or abnormal fibrinogen can lead to excessive bleeding, while problems with how it works can also throw off tests like this one.
What does a prolonged thrombin clotting time mean?
A longer than normal clotting time can mean there's heparin or a similar blood-thinning drug in your system, or that your fibrinogen isn't working properly. It can also point to a low fibrinogen level or a structural issue with the fibrinogen protein itself. Simple next steps include noting any medications you're taking and considering a repeat test to confirm the result.
What causes an abnormal thrombin clotting time?
The most common cause is the presence of anticoagulant drugs like heparin, dabigatran, or argatroban in your blood, since these directly interfere with clot formation. Low fibrinogen levels, liver problems, or rare inherited fibrinogen disorders can also cause an abnormal result. Certain other blood-thinning medications, like warfarin or factor Xa inhibitors, typically don't affect this specific test.
How often should I retest?
If you're on a blood-thinning medication that affects clotting, retesting frequency usually depends on dosage changes or new symptoms, so check your order confirmation or medication guidance for a suggested schedule. If your initial result was abnormal, a retest in a few weeks can help confirm whether it was a one-time finding or an ongoing issue. Tracking your results over time can help spot any meaningful trends.
What should I do if my results are abnormal?
If your result is outside the normal range, start by reviewing the report's explanation of what your specific value means. Keep a record of any medications, especially blood thinners, and consider retesting to confirm the finding. If you notice signs of serious bleeding, such as heavy or uncontrolled bleeding, seek medical care right away.
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
Thrombin Clotting Time 22 seconds
Demo results
Low (<14 sec) Normal (14-19 sec) Prolonged (>19 sec)
22 seconds

What this means

A result of 22 seconds is longer than the typical normal range, suggesting your blood is taking more time to clot than expected. This can happen if you're taking heparin or a similar blood-thinning medication, or if your fibrinogen levels or function are affected. It doesn't necessarily mean something is wrong, but it's worth a closer look.

* 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

Thrombin Clotting Time Blood Test

  • Check how fast blood clots
  • Screen for blood-thinning drug effects
  • Monitor unexplained bruising or bleeding
$205
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.