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  3. Coagulation Screen (COAG)

Coagulation Screen (COAG)

The coagulation screen is a comprehensive test panel designed to evaluate the blood's ability to clot, providing critical insights into an individual's hemostatic function. It includes the following elements:

  • Prothrombin Time (PT),
  • International Normalized Ratio (INR),
  • Partial Thromboplastin Time (PTT), and
  • Fibrinogen levels.

These tests collectively assess the efficiency of the clotting process, helping to identify bleeding disorders, excessive clotting (thrombosis), or the impact of certain therapies.

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Price of test:£82

The lowest price from the last 30 days: £NaN

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Awaiting result:

One day

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Collect material:

Blood

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Prepare:

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Purpose of the test

The coagulation screen is primarily used to detect abnormalities in the blood’s clotting mechanism. Prothrombin Time and INR help assess the external clotting pathway, which can be affected by conditions such as liver disease or the use of anticoagulants like warfarin. Partial Thromboplastin Time evaluates the internal clotting pathway, important in identifying hemophilia or other clotting factor deficiencies. Fibrinogen, a crucial protein, is measured to gauge its role in the formation of clots. A decreased fibrinogen level may indicate issues like disseminated intravascular coagulation (DIC) or liver disease.

Who Should Get Tested

This test is recommended for individuals preparing for surgery, those with a history of abnormal bleeding or bruising, or those being monitored for anticoagulation therapy. It is also important for patients with a family history of bleeding disorders or thrombosis, and for anyone experiencing unexplained clotting or bleeding.

Blood Test Preparation Guidelines
Time of day
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It is recommended to schedule your appointment for blood tests in the morning hours between 7:00-10:00.
Fasting
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It is recommended to fast for approximately 12 hours before blood sampling. The last meal of the previous day should ideally be consumed around 6:00 p.m. On the day before the test, avoid heavy and fatty meals as well as alcohol.
Stay hydrated
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Drinking water prior to testing can help with sample collection.
Other factors
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Tests should not be performed after a sleepless night or intense physical activity. It is recommended to avoid exercise and stress immediately before blood collection and to not smoke. A short rest is recommended.
Medications and supplements:
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Blood samples should be collected before the morning dose. Some drugs can interfere with test results. Consult with your doctor whether you can delay your dose because of lab tests.
Biotin supplements:
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High doses of biotin supplements can affect test results, causing false elevation or reduction. It's recommended to avoid taking biotin for at least 72 hours before blood collection. If you are taking biotin, inform the personnel collecting the blood so that they can provide specific instructions.
Interpreting Test Results

Abnormal results may suggest various conditions. Prolonged PT and APTT could indicate clotting factor deficiencies, liver disease, or the presence of certain medications like anticoagulants. Low fibrinogen levels may point to conditions such as DIC or sepsis. It is essential to discuss the results with a healthcare provider, as clinical history and further testing might be required to confirm any diagnosis​.

Price of test:£82

The lowest price from the last 30 days: £NaN

AI-Powered Insights and Expert Validation
Advanced AI Interpretation
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Language Model and Trusted Sources
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