for bloodclotting

Coagulation studies;

APTT: 21-35 sec; PT:

Hemophilia A and

Determine for clot formation.

activated partial

11-13 sec; bleeding

B: prolonged APTT;

APTT measures the time for

thromboplastin time

time (Duke): 1-5 min;

normal bleeding

clot to form in a section of

(APTT); prothrombin


time, platelet count,

clotting cascade affected by

time (PT); bleeding


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