Medical & affiliate disclosure: CTX Stat provides educational laboratory information and is not a substitute for professional medical advice, diagnosis, or treatment. CTX Stat may receive compensation from some outbound provider links when an affiliate program is active; provider comparisons and rankings are based on consumer fit, effective cost, access, policies, and reputation—not commission.
Quick take: how much does an aPTT blood test cost?
The aPTT blood test cost for self-pay buyers is usually in the low tens of dollars when ordered through an online lab marketplace and drawn at a national collection network. In the provider prices reviewed for this guide, effective single-test totals commonly fell around $28 to $59, after adding mandatory per-order requisition or physician fees where they were shown. The exact amount depends on the provider, whether the order uses Quest or Labcorp collection, whether your state allows direct-access testing, and whether you need a standalone aPTT or a broader coagulation panel.
- Lowest observed effective standalone total: about $28 through Jason Health, reflecting a low test price plus a required requisition charge listed in public price-comparison data.
- Common online range: about $28–$59 for a standalone aPTT/PTT, with some PT/INR + PTT combination panels in a similar range.
- Typical collection: a blood draw from a vein at a partner collection site; this is not an at-home finger-stick test.
- Most important shopping rule: compare the effective total, not the advertised test-only price. Requisition, physician, or order-processing fees can make a lower sticker price more expensive at checkout.
Self-pay aPTT blood test price comparison
An aPTT test is often listed as PTT, activated PTT, partial thromboplastin time, or activated partial thromboplastin time. For apples-to-apples comparison, the table below focuses primarily on standalone aPTT/PTT products when available. Some providers also sell a PT/INR + PTT panel; that panel is not identical because it includes additional PT/INR results, but it can sometimes be a better value if your clinician wants both tests.
| Provider | Listed test or product | Base price | Mandatory provider fee shown | Effective self-pay total | Collection / availability notes |
|---|---|---|---|---|---|
| Jason Health | Partial Thromboplastin Time, Activated | $10.00 | $18.00 requisition charge | $28.00 | Quest-based order in public comparison data; not available in NY, NJ, or RI in that listing. |
| Grassroots Labs | PTT – Partial Thromboplastin Time – Activated | $22.22 | $10.00 requisition charge | $32.22 | Quest-based order in public comparison data; not available in NY, NJ, or RI in that listing. |
| Request A Test | Partial Thromboplastin Time (PTT) Blood Test | $35.00 | $4.00 requisition charge | $39.00 | Quest-based order in public comparison data; not available in NY, NJ, or RI in that listing. |
| Walk-In Lab | Partial Thromboplastin Time Blood Test, Activated | $34.00 | $6.00 per-order physician fee shown on provider page | $40.00 | Provider page lists Quest and Labcorp test codes and typical results in 2–3 days; state availability can vary. |
| Ulta Lab Tests | Partial Thromboplastin Time, Activated (aPTT) Test | $28.95 | $12.95 requisition charge | $41.90 | Quest-based order in public comparison data; not available in NJ, NY, or RI in that listing. |
| Accesa Labs | PTT Test | $49.00 | No separate mandatory fee shown in the comparison listing | $49.00 | Quest-based order in public comparison data; listing excludes NY, NJ, MA, MD, and RI. |
| Lab Testing API | Partial Thromboplastin Time Activated Blood Test (aPTT) | $51.00 | No separate mandatory fee shown in the comparison listing | $51.00 | Quest-based order in public comparison data; not available in NJ, NY, or RI in that listing. |
| Personalabs | Activated Partial Thromboplastin Time (aPTT) Blood Test | $57.00 | No separate mandatory fee shown in the comparison listing | $57.00 | Quest-based order in public comparison data; not available in NJ, RI, or NY in that listing. |
| True Health Labs | Partial Thromboplastin Time (PTT) Activated Test | $59.00 | No separate mandatory fee shown in the comparison listing | $59.00 | Quest-based order in public comparison data; listing excludes NY, NJ, MA, and RI. |
These figures come from provider pages and public lab-price comparison listings for CPT code 85730, the common billing code for partial thromboplastin time testing. For example, Walk-In Lab’s product page lists the activated PTT test at $34.00 and separately shows a $6.00 per-order physician fee, along with CPT 85730, Quest code 763, Labcorp code 005207, no special preparation, and a typical 2–3 day result window. The broader public comparison page for Quest code 763 lists multiple online stores and shows how requisition charges change the effective total, including Jason Health at $28.00, Request A Test at $39.00, Ulta Lab Tests at $41.90, and several others in the $49–$59 range. Walk-In Lab Find Lab Tests Online
Price-shopping tip
If you are ordering only one aPTT test, the cheapest “base price” may not be the cheapest final price. Always add the requisition charge, physician fee, processing fee, or per-order fee before comparing providers. If you are ordering several tests at once, a per-order fee may be spread across multiple tests, which can change which provider is cheapest for your cart.
How we compared aPTT blood test costs
For this cost comparison, the main unit of comparison is the effective cost to the patient: the listed aPTT test price plus any mandatory fee shown for the order. We did not compare providers by advertising prominence, coupon language, or commission. When a provider offered both a standalone aPTT and a PT/INR + PTT panel, the standalone test was treated as the cleaner comparison. Combination panels are discussed separately because they include additional results and may be appropriate when a clinician wants a broader coagulation screen.
Several details can affect your personal final price:
- State restrictions: Direct-access lab testing is commonly restricted for consumers in New York, New Jersey, and Rhode Island. Some providers also exclude Massachusetts or Maryland for specific products.
- Collection network: Many online orders route to Quest Diagnostics collection sites; some providers also offer Labcorp options. A lower national price is not useful if the nearest eligible draw site is inconvenient.
- Per-order fees: A requisition fee may apply once per order, not once per test. That can make multi-test orders more economical than ordering one test at a time.
- Coupons and promotions: Temporary discounts can lower the cart total, but they may expire, exclude certain products, or not apply to provider fees.
- Insurance: This guide is for self-pay comparison. If you use insurance, your cost may depend on medical necessity, network status, deductible, coinsurance, and whether the ordering clinician documents a covered reason for testing.
Customer-satisfaction evidence was considered as a practical shopping factor, but not as a substitute for price, availability, or clinical appropriateness. Public review patterns are uneven: Ulta Lab Tests and Jason Health have Trustpilot profiles showing generally favorable ratings, though Jason Health’s review count is relatively small; Walk-In Lab publishes a reviews page citing a 4.8/5 average based on customer reviews from Verified Reviews, Facebook, and Google; Request A Test has more limited easily comparable third-party review evidence in public search results. Treat review sites as a signal about ordering experience, support, and result delivery—not as evidence that a test is medically necessary or that a result is clinically meaningful. Trustpilot: Ulta Lab Tests Trustpilot: Jason Health Walk-In Lab reviews
What is an aPTT blood test?
The aPTT test measures how many seconds it takes a blood sample to clot under controlled laboratory conditions. It is also called PTT or activated partial thromboplastin time. MedlinePlus explains that a PTT test helps evaluate a specific group of clotting factors and is often interpreted along with a prothrombin time test, because PT and PTT examine different parts of the clotting process. MedlinePlus
Clinicians may order aPTT testing to evaluate unexplained bruising or bleeding, investigate possible clotting-factor problems, help assess certain autoimmune-related clotting issues such as lupus anticoagulant patterns, or monitor some people receiving unfractionated heparin. However, the exact test used for heparin monitoring varies by institution and clinical situation. Labcorp’s test information for activated PTT notes that its listed aPTT is for screening purposes and should not be used for therapeutic unfractionated heparin monitoring; in some settings, a heparin anti-Xa assay may be preferred. Labcorp
In lab terms, aPTT is sensitive to problems in the intrinsic and common coagulation pathways. Labcorp describes the test as sensitive to deficiency or inhibition of factors in the intrinsic pathway, including factors XII, XI, IX, and VIII, along with contact factors; it is less sensitive to some common-pathway factor deficiencies unless abnormalities are more significant. This is one reason an abnormal aPTT does not diagnose a specific condition by itself. It usually points to the need for clinical correlation and, sometimes, additional tests such as PT/INR, fibrinogen, mixing studies, lupus anticoagulant testing, von Willebrand testing, or individual factor assays. Labcorp
Standalone aPTT vs PT/INR + PTT: which is the better buy?
For cost shoppers, the key question is not only “What is the cheapest aPTT?” but also “Is a standalone aPTT the right order?” A standalone aPTT gives one coagulation result. A PT/INR + PTT panel includes the aPTT/PTT plus prothrombin time and INR, which examine a different part of clotting. MedlinePlus notes that a PT test is commonly ordered with a PTT test to give a more complete understanding of clotting function. MedlinePlus
| Option | Best fit | Cost consideration | Important limitation |
|---|---|---|---|
| Standalone aPTT/PTT | When your clinician specifically requested aPTT/PTT only, or when repeating a known isolated abnormality. | Often about $28–$59 online, depending on mandatory fees. | Does not include PT/INR, platelet count, fibrinogen, or factor-specific testing. |
| PT/INR + PTT panel | When a broader initial coagulation screen is needed or when your order specifically says PT/PTT or PT/INR/PTT. | Sometimes only slightly more than a standalone aPTT; in some listings, combination panels were in the $33–$69 range. | Still a screening panel; abnormal results usually require follow-up testing. |
| Hospital or clinic lab order | When symptoms are urgent, surgery is upcoming, anticoagulant dosing is being managed, or results must flow directly into your medical record. | May cost more out of pocket, especially if billed through a hospital outpatient department. | Self-pay online pricing may not apply, but clinical oversight may be more important than price. |
If you are buying because a clinician wrote “PT/PTT,” “PT with INR and PTT,” or “coagulation studies,” do not assume a standalone aPTT is enough. Ordering the wrong product can save a few dollars but create a second blood draw and another fee. If the order is for pre-procedure clearance, anticoagulant management, unusual bleeding, or a known clotting disorder, confirm the exact test name and acceptable lab network with the ordering office before purchasing.
How self-pay aPTT ordering usually works
Most direct-access aPTT orders follow a similar workflow:
- Select the test online. Search for aPTT, PTT, partial thromboplastin time, or activated partial thromboplastin time. Check that the product is not a lupus anticoagulant-specific test unless that is what you need.
- Enter your state and ZIP code. Confirm that the provider can issue orders in your state and that a convenient collection site is available.
- Review the final cart. Add the test price plus requisition, physician, order, or processing fees. This is the number to compare.
- Receive the lab requisition. Some providers send the order electronically to the collection network; others may ask you to print or bring the requisition. Follow the provider’s instructions exactly.
- Visit the collection site. A phlebotomist draws blood from a vein, usually from the arm.
- Get results through the provider portal. Result timing varies; Walk-In Lab lists 2–3 days for its activated PTT product, while Labcorp’s test directory lists a usual turnaround within 1 day for its internal test entry, with scheduling and processing variables still possible. Walk-In Lab Labcorp
Preparation before the blood draw
MedlinePlus states that no special preparation is usually needed for a PTT test. Walk-In Lab’s activated PTT product page also lists no special preparation. Still, preparation is not the same as medication management. If you take anticoagulants, heparin, warfarin, aspirin, antiplatelet drugs, supplements that may affect bleeding, or any medication your clinician is monitoring, do not stop or change it unless the ordering clinician specifically tells you to. MedlinePlus Walk-In Lab
When not to shop only by price
Price comparison is useful for routine, non-urgent self-pay testing. It is not the right priority if you have heavy active bleeding, black or bloody stools, coughing or vomiting blood, symptoms of a blood clot, sudden neurological symptoms, chest pain, severe shortness of breath, or urgent pre-surgical instructions. In those situations, use appropriate medical care rather than waiting for a consumer lab order to process.
Understanding aPTT results and limitations
aPTT results are usually reported in seconds, with a reference range provided by the testing laboratory. Do not compare your number to a generic internet range without checking the range on your report. Reagents, instruments, specimen handling, age, and laboratory method can affect the reference interval.
In general, a prolonged aPTT means the sample took longer than expected to clot. MedlinePlus lists possible reasons for a longer-than-normal PTT, including hemophilia A or B, liver disease, vitamin K deficiency, inherited clotting-factor disorders, too much heparin, certain leukemias, and autoimmune conditions such as lupus anticoagulant syndrome. MedlinePlus also notes that a shorter-than-normal PTT can be associated with early disseminated intravascular coagulation, high clotting-factor levels in settings such as inflammation or pregnancy, and some advanced cancers, but an unusual result does not automatically mean a person has any one diagnosis. MedlinePlus
Several limitations matter when you are buying a self-pay aPTT:
- It is a screening test, not a diagnosis. APTT can suggest a clotting-pathway issue, but it does not identify the exact factor deficiency, inhibitor, medication effect, or disease state by itself.
- Normal does not always mean “no problem.” Labcorp notes that aPTT may not be prolonged in individual factor deficiencies unless levels drop below certain thresholds, depending on the factor. Mild or intermittent problems can require more specific testing. Labcorp
- Medication context is critical. Anticoagulants, heparin exposure, and some clinical conditions can change interpretation. A consumer portal result may not provide enough context.
- Specimen quality matters. Coagulation testing is sensitive to collection tube fill, citrate ratio, clotting in the tube, hematocrit extremes, and processing delays. Labcorp notes that citrate volume must be adjusted when hematocrit exceeds 55%. Labcorp
- Follow-up can cost more than the first test. If your aPTT is abnormal, the next step may be a repeat test, PT/INR, CBC with platelets, fibrinogen, D-dimer, lupus anticoagulant testing, mixing study, von Willebrand testing, or factor assays. Budgeting only for the first aPTT can underestimate the true cost of evaluation.
Practical next step after an abnormal result
If your aPTT is outside the lab’s reference range, save the full PDF report and contact the clinician who ordered or advised the test. Ask whether the result should be repeated, whether PT/INR or CBC results are needed for context, and whether any medications or specimen issues could explain the abnormality. If you ordered the test on your own and the result is clearly abnormal, it is reasonable to arrange medical review rather than ordering many additional coagulation tests without guidance.
Why aPTT prices vary so much
The lab’s technical reimbursement for CPT 85730 is relatively small compared with many consumer cash prices. CMS explains that most clinical diagnostic laboratory tests under the Medicare Clinical Laboratory Fee Schedule are paid using a fee-schedule methodology based on private payor rates, and public fee-schedule files show CPT 85730 as a low-dollar laboratory code. However, a consumer self-pay order includes more than the analytical test: the marketplace has to generate a compliant requisition, route the order, provide a portal, handle customer service, and sometimes include physician authorization or review. CMS
That is why aPTT cost shopping is mostly about order logistics. The same underlying Quest or Labcorp test code may appear at different prices depending on the reseller. A provider with a very low base price may add a higher requisition fee. Another provider may have a higher all-in price but stronger customer support, clearer instructions, or a more convenient portal. The best choice is the one that matches your required test, state eligibility, collection-site access, final checkout total, and need for support.
FAQs about aPTT blood test cost
What is the cheapest way to get an aPTT blood test?
For routine self-pay testing, the cheapest route is often an online lab marketplace that issues a requisition for a Quest or Labcorp blood draw. In the prices reviewed here, Jason Health had the lowest effective standalone aPTT total at about $28, including its listed requisition charge. The cheapest option for you may differ if your state is excluded, no nearby draw site is available, or you are ordering multiple tests and can spread a per-order fee across the cart.
Is aPTT the same as PTT?
In many consumer lab listings, PTT and aPTT are used interchangeably for activated partial thromboplastin time. Product names may say “PTT, activated,” “aPTT,” or “partial thromboplastin time, activated.” Confirm the test code and description if you are matching a clinician’s order.
Does insurance cover the aPTT test?
Insurance may cover aPTT when it is medically necessary and ordered by a clinician for a covered reason, but coverage depends on your plan, deductible, network status, diagnosis code, and the billing lab. Self-pay online prices generally bypass insurance and may not count toward your deductible.
Do I need both PT/INR and aPTT?
Sometimes. PT/INR and aPTT evaluate different parts of the clotting system and are often interpreted together. If your clinician requested PT/INR + PTT or “coagulation studies,” do not order a standalone aPTT unless the office confirms it is sufficient.
Can I order an aPTT test in New York, New Jersey, or Rhode Island?
Many direct-access lab providers exclude NY, NJ, and RI because of state rules for consumer-ordered testing. Some products also exclude MA or MD. If you live in a restricted state, you may need to work through a local clinician or an in-state lab pathway rather than a national online marketplace.
How long do aPTT results take?
Result timing depends on the provider, collection site, transport schedule, and lab. Some laboratory directories list a usual turnaround around one day after specimen processing, while consumer providers may quote two to three days to allow for collection, routing, weekends, holidays, and portal release.
Should I fast before an aPTT blood test?
Fasting is not usually required for a standalone aPTT. If you are ordering other tests at the same time, such as a lipid panel or glucose-related testing, those tests may have different preparation instructions.
What happens if my aPTT is high?
A high or prolonged aPTT means the sample took longer than expected to clot. Possible explanations include medication effects, clotting-factor deficiencies, inhibitors, liver disease, lupus anticoagulant patterns, specimen issues, or other conditions. The result should be interpreted with your symptoms, medications, PT/INR, CBC, and other clinical information.
Is an online aPTT test appropriate before surgery?
Only if the surgical team accepts self-pay outside-lab results and gives you the exact required tests. Many pre-operative workflows require results to be ordered, received, and documented through a specific health system or surgeon’s office. Check before purchasing.
Why is the hospital price higher than online self-pay prices?
Hospital outpatient pricing may include different billing structures, facility overhead, negotiated payer contracts, and medical-record integration. Online self-pay pricing is usually designed for routine consumer orders and may not include physician evaluation or urgent clinical interpretation.
