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Pathology

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pawsPathologyManual: Activated Partial Thomboplastin Time

Lonic Code

 

Test Name

Activated Partial Thomboplastin Time

Synonyms

aPTT, PTT

Test Consists

 

Specimen Requirements

2.7 mL of blood

Volume and Container

Blue top (sodium citrate) tube

Storage and Transport

Send at room temperature.

Critical Values

> 100 seconds

Causes for Rejection

Tube improperly filled especially underfilling;

Specimen clotted;

Hemolysis

Turn Around Time

1 hour

Availability

 

CPT / HCPCS Code

85730

Medicare Fee

 

Comments

 

Row Stamp

17,219,355

Last Updated

10/07/2003 10:59:27

Volume

 

Minimum Volume

 

Indications

Evaluate intrinsic system, monitor heparin therapy, DIC, liver failure

Professional Fee

 

Tech Charge

 

Total Fee

 

Special Instructions

Allow blue top/citrate tubes to fill completely. Immediate delivery at room temperature to laboratory.

Lab

Core Lab, BI 2023, 706-721-2120

Schedule

24/7/365

Request Form

Frequently Requested Tests requisition. Indicate medical necessity.

Methodology

 

Patient Prep

 

Post Processing

 

Collection Guidelines

Gently mix 8 - 10x post collection.

Reference Range

28.0 - 35.7 sec   (May vary with lot number changes) Therapeutic range 50 - 80 seconds.

Limitations and Contraindications

 

Interpretation

 

Additional Information

 

CPOE Test Name

APTT or PTT

Status

1

AUDIT_DEL

 

Attachments

Created at 9/8/2014 5:56 PM by Bradshaw, Keir
Last modified at 9/8/2014 5:56 PM by Bradshaw, Keir