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Interpretation of results: The
platelet count indicates that the patient has a normal amount of
platelets. The bleeding time assesses platelet function. Although
the patient's bleeding time is on the long side, it is still within
normal range. The protime is also within normal range which tells
the physician that the extrinsic clotting mechanism involving factor
VII is functioning properly. The APTT shows a defect in the
intrinsic clotting mechanism. This points to a defect in factor
VIII, IX, XI, or XII. Further testing is needed to tell which factor
is abnormally low or missing in the blood.
Further comments:
If the PT and APTT were both prolonged, an abnormality in the common
pathway would be indicated. The common pathway involves factors I,
II, V, and X. |