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(832) 328-0075
Houston, TX    Click here for Locations

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2703 S Texas 6, Ste 138
Houston, TX 77082
Phone: (832) 328-0075
Mon-Fri: 8:30am-6pm
Sat: 10am-2pm
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The PT Test or Prothrombin Time Test is a blood test that measures how long it takes for blood to clot. It is mainly a test given to detect bleeding problems, monitor people taking anticoagulant medication, or for pre‐surgical workups.

Why Do I Need It?:

If you’re heading into surgery, your doctor or plastic surgeon will want to make sure your blood will clot and there aren’t any problems. It’s also used to find a cause for abnormal bleeding/bruising, to monitor how well your liver is working, and see if your blood‐thinning medicine is working.

Normal Range

No anticoagulant medications1.0 – 1.4
On anticoagulant medications2.0 – 3.0

High Results Indicate:

Elevated results are usually 2.5 – 3.5 depending on your medications. Elevated levels can indicate that your blood is taking too long to clot.

Low Results Indicate:

Low levels can indicate that your blood is clotting too quickly.