Guide to Diagnostic Tests
Partial thromboplastin time
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Test/Range/Collection
Partial thromboplastin time, activated, plasma (aPTT)
25–35 seconds
(laboratory-specific)
Panic: ≥60 seconds (off heparin)
Blue
$$
Do not contaminate specimen with heparin.
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Test/Range/Collection
Partial thromboplastin time, activated, plasma (aPTT)
25–35 seconds
(laboratory-specific)
Panic: ≥60 seconds (off heparin)
Blue
$$
Do not contaminate specimen with heparin.
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