
Coagulation Profile (PT/INR & aPTT) near me in Howrah










A Coagulation Profile (PT/INR & aPTT) is a blood test that evaluates the clotting ability of the blood. It typically includes tests such as prothrombin time international normalized ratio (PT/INR) and activated Partial Thromboplastin Time (aPTT). These tests assess different aspects of the blood’s ability to clot properly through various pathways. Results from a Coagulation Profile (PT/INR & aPTT) help diagnose and monitor conditions such as bleeding disorders, clotting disorders, liver diseases, and the effectiveness of anticoagulant therapy. This test is available at an affordable price in Howrah with Tata 1mg Labs.
Your doctor may suggest Coagulation Profile (PT/INR & aPTT) if you have a history of unexplained bleeding or bruising, or before a surgical procedure to evaluate the risk of excessive bleeding. Overnight fasting (8-12 hours) is preferred for this profile. However, drinking water is acceptable. A duly filled coagulation requisition form is mandatory for sample collection. Also, inform the doctor if you are taking medications such as blood thinners, as they may interfere with test results, and your doctor may adjust your dosage or ask you to stop them temporarily before the test.








What does Coagulation Profile (PT/INR & aPTT) measure?
Contains 2 testsA Coagulation Profile (PT/INR & aPTT) includes blood tests that provide information about the blood's clotting ability. This profile measures prothrombin time international normalized ratio (PT/INR) and activated partial thromboplastin time (aPTT).
The Prothrombin Time (PT) and aPTT tests measure how long the blood takes to clot. Precisely, they assess the factors in the blood that help initiate the clotting process. The INR is a standardized interpretation of the PT results. It is calculated to ensure consistency in interpreting PT values across different laboratories and testing methods. The INR is essential when monitoring patients on anticoagulant medications like warfarin. The INR helps adjust medication dosages to maintain blood clotting within a therapeutic range. The aPTT test is significant when monitoring patients on anticoagulant medications, such as heparin.
The PT INR (Prothrombin Time with INR) test measures the Prothrombin Time (PT) and reports it as the International Normalized Ratio (INR). The PT measures how long it takes for blood to clot. Specifically, it assesses the factors in the blood that help initiate the clotting process. The INR is a standardized interpretation of the PT results. It is calculated to ensure consistency in interpreting PT values across different laboratories and testing methods. It is particularly important when monitoring patients on anticoagulant medications, such as warfarin. The INR helps adjust medication dosages to maintain blood clotting within a therapeutic range.
Know more about PT INR (Prothrombin Time with INR)
An Activated Partial Thromboplastin Time test measures the time taken by the blood to form a clot. In other words, it is a screening test that helps evaluate a person’s ability to form blood clots. The test analyzes the amount and the function of specific proteins in the blood called coagulation or clotting factors, which are an essential part of blood clot formation.
Blood clotting or coagulation occurs through a series of cascade reactions due to the activation of clotting factors. There are a total of thirteen clotting factors within our bodies that aid in clot formation, and for healthy clot formation, all clotting factors need to be in the right balance. Any imbalance of these factors can lead to a blood clotting disorder.
Know more about Activated Partial Thromboplastin Time





FAQs related to Coagulation Profile (PT/INR & aPTT) in Howrah
- Condrey JA, Flietstra T, Nestor KM, Schlosser EL, Coleman-McCray JD, Genzer SC, Welch SR, Spengler JR. Prothrombin Time, Activated Partial Thromboplastin Time, and Fibrinogen Reference Intervals for Inbred Strain 13/N Guinea Pigs (Cavia porcellus) and Validation of Low Volume Sample Analysis. Microorganisms. 2020 Jul 27;8(8):1127. [Accessed 21 Sept. 2023]. Available from:
- Yuan S, Ferrell C, Chandler WL. Comparing the prothrombin time INR versus the APTT to evaluate the coagulopathy of acute trauma. Thromb Res. 2007;120(1):29-37. [Accessed 21 Sept. 2023]. Available from:
- Doherty TM, Kelley A. Bleeding Disorders [Internet]. Treasure Island, Florida: StatPearls Publishing; 2023 Jan. [Accessed 21 Sept. 2023]. Available from:
- Barbosa ACN, Montalvão SAL, Barbosa KGN, Colella MP, Annichino-Bizzacchi JM, Ozelo MC, De Paula EV. Prolonged APTT of unknown etiology: A systematic evaluation of causes and laboratory resource use in an outpatient hemostasis academic unit. Res Pract Thromb Haemost. 2019 Sep 8;3(4):749-757. [Accessed 21 Sept. 2023]. Available from:
- Kershaw G. Performance of Activated Partial Thromboplastin Time (APTT): Determining Reagent Sensitivity to Factor Deficiencies, Heparin, and Lupus Anticoagulants. Methods Mol Biol. 2017;1646:75-83. [Accessed 21 Sep. 2023]. Available from:
- Yang R, Moosavi L. Prothrombin Time [Internet]. Treasure Island, Florida: StatPearls Publishing; Jan. 2023 [Accessed 21 Sept. 2023] Available from:
- Prothrombin Time [Internet]. Rochester, NY: University of Rochester Medical Center; [Accessed 21 Sept. 2023] Available from:
- Prothrombin Time - an overview [Internet]. ScienceDirect; [Accessed 21 Sept. 2023] Available from:
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