In Trying to Explain a Prolonged APTT, the Following Should

question 25

Multiple Choice

In trying to explain a prolonged APTT, the following should be considered:

• A) The possibility that there is heparin in the specimen
• B) Hypofibrinogenemia and/or DIC
• C) Elevated hematocrit resulting in too much anticoagulant in the tube for the amount of plasma present and/or traumatic venipuncture
• D) Specific factor deficiency or an inhibitor
• E) All of the above