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Orderable Name PTT PTT - Activated Partial Thromboplastin Time

Specimen Type

Blood

Minimum Requirements

2.7 mL

Container Type/Storage

Light Blue, Sodium Citrate
Plasma / Refrigerate

Methodology

Clot Based Method

Special Handling

Test should be performed within 4 hours of blood collection.

STAT Turnaround Time

1 Hour

Routine Turnaround Time

Daily

Reference Range

aPTT  sec

Birth-1 Day : 31.0-55.0
>1 Day-5 Days : 25.0-60.0
>5 Days-1 Month : 32.0-55.0
>1 Month-3 Months : 29.0-50.0
>3 Months-6 Months : 28.0-43.0
>6 Months-150 Years : 24.0-34.0

CPT

85730