Also known as: PT and PTT (Prothrombin & Partial Thromboplastin Time)
On your lab requisition: Quest “Prothrombin with INR and Partial Thromboplastin Times” (test code 4914)
CPT code: 85610, 85730the billing code Quest, Labcorp and hospital labs all use for this test
The short answer
PT and PTT (Prothrombin & Partial Thromboplastin Time) measures Prothrombin Time (PT), INR and Partial Thromboplastin Time (PTT) from a standard blood draw. At TestWell it costs $26.99 plus a $6 lab processing fee, needs no fasting, and results post in 1–3 business days. Physician-authorized with no doctor's visit or insurance needed; draw at Quest or Labcorp.
Hospital Lab
$150
cash pay
Other Labs
$60
+ lab fees
TestWell
$26.99
+ $6 lab processing fee
Ordering for surgical clearance? Allow 6–8 days before your procedure.
Results typically post 1–3 business days after your blood draw — but between visiting the lab, weekend processing, and your surgical team's review, we recommend ordering at least 6–8 days ahead of surgery. An order placed the day before a procedure will not have results back in time.
This combined panel measures both Prothrombin Time (PT) and Partial Thromboplastin Time (PTT), providing a complete assessment of your blood's clotting ability. PT measures the extrinsic clotting pathway and is commonly used to monitor Warfarin therapy, while PTT measures the intrinsic pathway and is used to monitor Heparin therapy and screen for clotting factor deficiencies. Together, they give a comprehensive picture of coagulation function. This test is essential for pre-surgical clearances, monitoring anticoagulant therapy, investigating unexplained bleeding or bruising, and evaluating clotting disorders like hemophilia or von Willebrand disease.
Blood health testing evaluates your blood cells, clotting factors, and oxygen-carrying capacity to detect anemia, infection, bleeding disorders, and other hematologic conditions.
Anyone investigating unexplained fatigue, frequent infections, bruising, or as part of a routine health check.
Sample Type
Blood draw
Fasting
Not required
Results In
1–3 business days · typical; varies by lab and draw day
Performed At
Quest or Labcorp
3 biomarkers tested · 2 measured, 1 calculated from them
Your PT and PTT (Prothrombin & Partial Thromboplastin Time) results will include values for each of the 3 biomarkers tested, along with reference ranges. Results are reviewed by a licensed physician before being released to your secure portal.
If any values fall outside the normal range, your report will include guidance on what that may mean and recommended next steps. You'll receive an email notification when your results are ready, typically within 1–3 business days.
Typical reference range layout
Lab reports show where your value sits relative to established reference intervals—your physician interprets this in context for you. Already have results? Analyze them with your AI assistant against our physician-reviewed ranges.
No fasting required. Take your usual medications including blood thinners unless instructed otherwise by your provider.
What can throw off this result
Physician-reviewed “Before your test” pages — what each factor does, for how long, and what to do about it.
TestWell orders the same PT and PTT (Prothrombin & Partial Thromboplastin Time) the labs run for doctors' offices, so you can walk into any of these labs with our requisition — no doctor's visit, a licensed physician authorizes the order, and most patient service centers take walk-ins. The table shows each lab's own test code, the name printed on the requisition, what the lab charges on its own consumer site, and the price through TestWell at that lab (plus one $6 fee per order).
| Lab | Test code | On the requisition | Lab's own site | Through TestWell |
|---|---|---|---|---|
| Quest Diagnostics | test code 4914 | “Prothrombin with INR and Partial Thromboplastin Times” | not sold direct | $54.99 + $6 |
| Labcorp | test no. 020321 | “PT and PTT (Prothrombin & Partial Thromboplastin Time)” | not sold direct | $26.99 + $6 |
You choose the lab at checkout; the requisition is written for that lab and arrives by email within minutes. New York and New Jersey orders draw at BioReference. Lab-direct prices are read from the labs' public pages and re-checked regularly.
Where to get it near you: patient service centers by state and city · search by ZIP code
A PT and PTT (Prothrombin & Partial Thromboplastin Time) test costs $26.99 at TestWell — $32.99 all-in, since the $6 lab processing fee is charged once per order and there is no draw or physician fee. Hospital outpatient labs typically bill around $150.00 self-pay. With insurance you pay your plan's negotiated rate against your deductible; TestWell's price is fixed before the draw and HSA/FSA-eligible.
| Where you order | Price | One test, all-in | Notes |
|---|---|---|---|
| TestWell (drawn at Quest or Labcorp) | $26.99 | $32.99 | Includes the one $6 lab processing fee, charged once per order |
| Hospital outpatient lab, self-pay (typical) | $150.00 | $150.00 | Reference figure; hospital charges vary widely by facility and are often higher |
Lab test codes: Quest test code 4914 · Labcorp test no. 020321. Competitor prices are read from the linked public pages and re-checked regularly; the labs' sites may add taxes or change prices without notice.
Compare more: Quest Diagnostics price list · Labcorp price list · Quest vs Labcorp · Lab test price checker
Most PT and PTT (Prothrombin & Partial Thromboplastin Time) results are available in 1–3 business days after your specimen arrives at the lab. You'll get an email the moment results are ready, with everything viewable in your TestWell portal.
Blood draw. A standard venous blood draw, collected at any Quest, Labcorp or BioReference patient service center — walk in with the requisition we email you, no appointment needed at most locations.
On TestWell, the PT and PTT (Prothrombin & Partial Thromboplastin Time) is $26.99. Quest Direct lists comparable tests at $60. Walk-in hospital labs typically bill $150 or more without insurance. Insurance is not required — pay one all-in price.
No fasting required for the PT and PTT (Prothrombin & Partial Thromboplastin Time). No fasting required. Take your usual medications including blood thinners unless instructed otherwise by your provider.
The PT and PTT (Prothrombin & Partial Thromboplastin Time) is available at Quest and Labcorp patient service centers nationwide. Order online at TestWell, pick your preferred lab, and we'll generate a digital requisition for the location closest to you.
Aspirin and blood thinners can change a PT and PTT (Prothrombin & Partial Thromboplastin Time) test result without anything being wrong. Aspirin and blood thinners can raise INR — expected; keep the draw at a consistent time relative to the dose. Each is explained on our physician-reviewed "Before your test" pages; when one applies, remove it and retest.
CPT 85610, 85730. That is the billing code Quest, Labcorp and hospital laboratories all use for a PT and PTT (Prothrombin & Partial Thromboplastin Time) test, so it is the number to match on an explanation of benefits, a doctor's order or a price list — the same code, the same test, whichever lab draws it. You do not need the code to order: TestWell sells the PT and PTT (Prothrombin & Partial Thromboplastin Time) test for $26.99 with the physician order included, no insurance required, and results in 1–3 business days.
The PT and PTT (Prothrombin & Partial Thromboplastin Time) test is Quest Diagnostics test code 4914 ("Prothrombin with INR and Partial Thromboplastin Times"), Labcorp test number 020321 (CPT 85610, 85730). TestWell orders it under those codes for $26.99 at Quest or Labcorp — no doctor's visit or insurance required, results in 1–3 business days. Codes verified against the labs' catalogs in 2026.
Medically reviewed by Youmna DiStefano, MD · Last reviewed September 2026
Related guide
PT/INR Explained: What the Prothrombin Time and INR Blood Test Measures and What Your Result Means
TestWell Price
$26.99
+ $6 lab processing fee at checkout
Ordering for surgical clearance? Allow 6–8 days before your procedure.
Results typically post 1–3 business days after your blood draw — but between visiting the lab, weekend processing, and your surgical team's review, we recommend ordering at least 6–8 days ahead of surgery. An order placed the day before a procedure will not have results back in time.
No insurance needed · HIPAA compliant
Frequently ordered together
Customers who ordered PT and PTT (Prothrombin & Partial Thromboplastin Time) also added these for a more complete health picture.
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PT and PTT (Prothrombin & Partial Thromboplastin Time)
$26.99