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Related Experiment Videos

False positive 125I fibrinogen test.

K P Poulose, A J Kapcar, R C Reba

    Angiology
    |April 1, 1976
    PubMed
    Summary
    This summary is machine-generated.

    The 125I fibrinogen test shows a high false positive rate of 90% for deep venous thrombosis. This diagnostic test is unreliable due to false positives from inflammation, hematoma, and recent procedures.

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    Area of Science:

    • Radiology
    • Nuclear Medicine
    • Vascular Imaging

    Background:

    • Deep venous thrombosis (DVT) diagnosis can be challenging.
    • Non-invasive and accurate diagnostic tools are crucial for patient management.
    • 125I fibrinogen scintigraphy was explored as a potential diagnostic method.

    Purpose of the Study:

    • To evaluate the diagnostic accuracy of the 125I fibrinogen test for deep venous thrombosis.
    • To determine the incidence of false positive results in patients with suspected DVT.

    Main Methods:

    • The 125I fibrinogen test was administered to 20 patients presenting with symptoms indicative of DVT.
    • Results were analyzed for abnormal accumulation of the radiotracer.

    Main Results:

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    • The study found a very high incidence of false positive results (90%).
    • Increased 125I fibrinogen accumulation was observed in areas of recent surgical incisions, inflammation, hematoma, and post-venogram/arthrogram.
    • These factors significantly interfered with accurate DVT detection.

    Conclusions:

    • The 125I fibrinogen test is unreliable for diagnosing DVT due to a high false positive rate.
    • Venography is recommended as the preferred diagnostic procedure for suspected thrombophlebitis.
    • Clinical suspicion of DVT requires a more specific diagnostic modality.