Inpatient and Outpatient Orderable

Activated Partial Thromboplastin Time (APTT) Build info

Synonyms

  • APTT
  • ACTIVATED PARTIAL THROMBOPLASTIN TIME
  • PTT
  • LAB325

Short Name

APTT

Procedure Master Number

LAB325

Procedure ID

1760

Clinical Info

Specimen Sources

 Blood, Arterial Blood, Capillary Blood, Central Line Blood, Venous

Specimen Types

 Blood

Container

Blue Top Tube

Collection Instructions

Container/Tube:  Light blue-top (3.2% sodium citrate) tube
Specimen:  Full tube
Transport Temperature:  Refrigerate
Collection Instructions:  1. If no other tube is drawn, draw a discard tube.
2. Fill tube completely.
3. Mix by gently inverting several times.
Collection Instructions:If the light blue top tube is the only tube to be drawn and will be collected using a  
butterfly set, a “discard” tube (either a plain[non-additive] or light blue)  must be partially drawn just to completely 
fill the collection tubing with blood before collecting the light blue top for testing.  Failure to perform this step 
will result in an under-filled tube that the laboratory will reject. Allow blood to fill the tube completely to the line on the tube. 
 The ratio of blood to  anticoagulant is critical in coagulation testing and at least a 90% fill is required. Immediately mix
the specimen by gently inverting the tube 4-6 times to completely mix with the anticoagulant.  
Failure to perform this can result in a clotted sample, which is unacceptable for testing.
 

Transport Instructions

Refrigerate

Specimen Stability

Preferred 4 Hours               Acceptable: 24 hrs Refrigerated

Methodology

Clotting-ACL® TOP/IL

Days Performed

Monday through Sunday, continuously

Performing Laboratory

Northwell Health Laboratories

CPT

85730

PDM

 5500540

Only Orderable at Locations:

 Orderable Everywhere

Results
Component Name Base Name Common Name External Name
ACTIVATED PARTIAL THROMBOPLASTIN TIME APTT APTT aPTT
APTT COMMENT APTTCOM APTT COMMENT Aptt Comment