Interpreting the Mixing Study Results: Case Study Two

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Interpreting the Mixing Study Results: Case Study Two

The laboratory receives an order for a mixing study after a patient who has experienced a fetal loss has an abnormally prolonged aPTT test. The results are as follows:

Initial aPTT

Immediate aPTT mixing study

Incubated aPTT mixing study

86 sec. (normal range 21-34 seconds)

87 sec.

88 sec.