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PTT, Activated
Quest Diagnostics1 test optionFrom $12.60
PTT, Activated
Quest DiagnosticsCatalog information reviewed: August 24, 2026 by the Sunridge Medical clinical team.
What this laboratory test evaluates
Details
Partial Thromboplastin Time, Activated (aPTT) – This test is used to check for problems with blood clotting. It helps to find out if there are deficiencies or inhibitors affecting certain clotting factors that are crucial for blood to clot properly. These factors are part of what's called the intrinsic and common pathway coagulation factors, including Factors VIII, IX, XI, XII, II, V, X, and fibrinogen.
What patients is this test right for?This test might be recommended if there are signs of bleeding disorders or to monitor the effectiveness of treatment for such conditions.
What type of sample is required for this test?One full unopened 3.2% sodium citrate (light blue-top) tube is needed for this test.
Test Resources http://education.questdiagnostics.com/faq/FAQ159
Additional test information
This test is used to check for problems with blood clotting. It helps to find out if there are deficiencies or inhibitors affecting certain clotting factors that are crucial for blood to clot properly. These factors are part of what's called the intrinsic and common pathway coagulation factors, including Factors VIII, IX, XI, XII, II, V, X, and fibrinogen.
Collection and processing
- Sample type: Plasma
- Fasting: No
- Estimated laboratory processing: Results should be available in 2 – 5 business days after the sample is collected
How Sunridge uses laboratory information
Sunridge considers the medical question, symptoms, history, medications, prior results, and whether the finding could change care before recommending testing. A laboratory result is not interpreted in isolation and does not establish a diagnosis by itself.
Before requesting this test
Availability, collection requirements, eligibility, and processing estimates can change. Sunridge reviews each request and, when appropriate, creates the order through Fullscript. Follow the current instructions supplied with the approved order.
Common questions about this laboratory test
- What sample does this test require?
- The listed sample type is Plasma. Confirm current collection instructions in the approved order.
- Does this test require fasting?
- The current catalog record lists fasting as: No. Follow the instructions supplied with the approved order.
- How long does laboratory processing usually take?
- Results should be available in 2 – 5 business days after the sample is collected. Timing can change after collection or if a laboratory requires additional review.
About this test
Details
Partial Thromboplastin Time, Activated (aPTT) - This test is used to check for problems with blood clotting. It helps to find out if there are deficiencies or inhibitors affecting certain clotting factors that are crucial for blood to clot properly. These factors are part of what's called the intrinsic and common pathway coagulation factors, including Factors VIII, IX, XI, XII, II, V, X, and fibrinogen.
What patients is this test right for?This test might be recommended if there are signs of bleeding disorders or to monitor the effectiveness of treatment for such conditions.
What type of sample is required for this test?One full unopened 3.2% sodium citrate (light blue-top) tube is needed for this test.
Test Resources http://education.questdiagnostics.com/faq/FAQ159
Additional details
This test is used to check for problems with blood clotting. It helps to find out if there are deficiencies or inhibitors affecting certain clotting factors that are crucial for blood to clot properly. These factors are part of what's called the intrinsic and common pathway coagulation factors, including Factors VIII, IX, XI, XII, II, V, X, and fibrinogen.
Highlighted health areas
- Cardiovascular
- Hematology
Biomarkers and report focus
The exact analytes and report format can change. Confirm the current contents in the Fullscript order before payment.
- Partial Thromboplastin Time, Activated