Activated PTT 部份凝血素時間	H061
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Specimen Required 3 mL Cit (1 mL cPPP plasma). Send ambient within 4 hr.	Schedule Monday-Saturday
Notes Reference range updated, effectively 22 Jan 2020.
Specimen Stability Ambient: 4 hr Refrigerated: 4 hr Frozen: 1 month
Reference Interval 24.4 - 33.7 seconds

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