A Partial Thromboplastin Time PTT

Synonyms	PTT APTT
Allscripts (AEHR) Order Name	Activated Partial Thromboplastin Time
Sunrise Clinical Manager (SCM) Order Name	Activated Partial Thromboplastin Time
EPIC Order Name	Activated Partial Thromboplastin Time (APTT)
Clinical Info
Specimen Type	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
Result Interpretation 26.1 - 36.8 Seconds Recommended therapeutic heparin range (full dose) for APTT is 64-98 seconds. Recommended therapeutic argatroban range is 1.5 to 3.0 times the baseline APTT value, not to exceed 100 seconds. Recommended therapeutic refludan range is 1.5 to 2.5 times the baseline APTT.
Forms