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Test Name:APTT
Test Number:490
Collect:4.5 mL (3.2%) Na Citrate tube - lt blue
Peds Collect:2.7 mL (3.2%) Na Citrate tube - lt blue
Container:Routine:
2 – Microcentrifuge Tubes (Beaker sites) or
2 – Coagulation Specimen Transport Tubes

STAT:
Lt blue top (3.2% Na Citrate) tube
Processing:Routine: Process Platelet Poor Plasma following instructions in the Collection/Processing Details and freeze.

STAT requests only: Send whole blood sample in original collection container with STAT courier. Must be tested within 4 hours of collection.
Transport/Stability:Frozen - strict
Refrigerated - NO
Alternate Names: Activated Partial Thromboplastin Time
aPTT
PTT
85730.0
Performing Lab:AHL - Coagulation
Days Set Up:Mo - Su Available STAT
Expected TAT:1 day
Ref. Ranges:Adult: 27 - 35 seconds

Heparin therapeutic range: 68 - 107 seconds
Collection/
Processing Details:
Do not over or under fill the collection tube (see Additional Info link).
Greiner tubes are not acceptable.

Process Platelet Poor Plasma (P.P.P) following the linked instructions.

Basic Coagulation Specimen Processing Instructions

Separate plasma into two (2) 1 mL aliquots, label as "NaCi Plasma P.P.P" and freeze immediately.
Specimens will be rejected if hemolyzed, or patient on heparin > 1.0 IU/mL.
Method:Coagulation test method
CPT Codes:85730
Additional Information: Proper Na Citrate Tube Filling
Date Created:11/30/2001
Revised Date:08/23/2018