Partial thromboplastin time (PTT)
From DrKoop's partner site on breast cancer, MyBreastCancerNetwork.com
Alternative Names APTT; PTT; Activated partial thromboplastin time Normal Values The normal value will vary between laboratories. In general, clotting should occur between 25 to 35 seconds. If the person is taking blood thinners, clotting takes up to two and a half times longer. What abnormal results mean An abnormal (too long) PTT result may be due to:
Review Date: 03/09/2007  advertisement
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