APTT (Activated Partial Thromboplastin Time), Citrated Plasma – C0024a
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Detailed Description
The APTT (Activated Partial Thromboplastin Time) test is a crucial blood test used to evaluate the efficiency of the intrinsic and common pathways of the coagulation cascade. It measures the time taken for blood to clot, helping assess bleeding disorders and monitor anticoagulant therapy such as heparin.
This test plays a vital role in diagnosing clotting abnormalities, identifying coagulation factor deficiencies, and detecting conditions like hemophilia or liver disease. It is commonly performed before surgeries or in patients with unexplained bleeding or clotting issues.
Alternative Test Names / Search Terms
APTT Test, Partial Thromboplastin Time Test, Clotting Time Test, Coagulation Profile Test, Blood Clotting Test India, Heparin Monitoring Test
Test Purpose
- Evaluate blood clotting function
- Detect bleeding or clotting disorders
- Monitor heparin therapy
- Assess coagulation factor deficiencies
- Pre-surgical screening for bleeding risk
Key Benefits
- ✔ Detects coagulation abnormalities early
- ✔ Helps diagnose hemophilia and clotting disorders
- ✔ Monitors effectiveness of anticoagulant therapy
- ✔ Essential for surgical risk assessment
- ✔ Quick and reliable diagnostic test
What It Measures
This test measures the time (in seconds) it takes for a clot to form in citrated plasma after the addition of specific reagents, reflecting the functionality of clotting factors such as VIII, IX, XI, and XII.
When is This Test Recommended?
- Easy bruising or prolonged bleeding
- Frequent nosebleeds or gum bleeding
- Before surgery or invasive procedures
- Monitoring anticoagulant (heparin) therapy
- Suspected clotting disorders or liver disease
Preparation & Instructions
- No fasting usually required
- Inform your doctor about medications (especially blood thinners)
- Avoid self-medication before the test
- Follow lab-specific instructions if provided
Sample Type
Citrated Plasma (Blood Sample collected in sodium citrate tube)
Reporting Time
Usually within 24 hours
Reference Range (may vary by lab)
- Typically: 25 – 35 seconds
Interpretation of Results
-
Prolonged APTT: May indicate clotting factor deficiency, hemophilia, liver disease, vitamin K deficiency, or anticoagulant therapy
-
Shortened APTT: Rare, may suggest increased clotting tendency or laboratory variation
FAQs
1. What is the difference between APTT and PT test?
APTT evaluates the intrinsic pathway, while PT (Prothrombin Time) assesses the extrinsic pathway of blood coagulation.
2. Do I need to fast before this test?
Fasting is generally not required unless advised by your doctor.
3. Can medications affect APTT results?
Yes, especially anticoagulants like heparin can prolong APTT.
4. Is this test necessary before surgery?
Yes, it helps assess bleeding risk and ensures safe surgical procedures.
5. Is the test painful?
It involves a routine blood draw with minimal discomfort.
Safety & Care
- Performed under medical supervision
- Use sterile collection techniques
- Inform healthcare provider of any bleeding history
- Follow all pre-test guidelines
Additional Information
APTT is often included as part of a coagulation profile and is essential in diagnosing disorders related to abnormal bleeding or clotting. It provides valuable insight into the body's hemostatic balance.
What You Receive
- Accurate APTT Test Report
- Reliable laboratory processing
- Clinically validated results
Free From
- No radiation exposure
- Minimal invasiveness
- No complex preparation
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