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Expected turnaround time for a result, beginning when ARUP has received the specimen.
1-2 days
Reference Interval
Normal range/expected value(s) for a specific disease state. May also include abnormal ranges.
Test Number
Components
Reference Interval
PTT, Inhibitor Screen
32-48 seconds
Interpretive Data
May include disease information, patient result explanation, recommendations, or details of testing.
Compliance Category
FDA
Note
Additional information related to the test.
If PTT is prolonged, a PTT 1:1 immediate mixing study will be added. If the immediate mixing study is normal, an incubated mixing study will be added. Additional charges apply.
Hotline History
N/A
CPT Codes
The American Medical Association Current Procedural Terminology (CPT) codes published in ARUP's Laboratory Test Directory are provided for informational purposes only. The codes reflect our interpretation of CPT coding requirements based upon AMA guidelines published annually. CPT codes are provided only as guidance to assist clients with billing. ARUP strongly recommends that clients confirm CPT codes with their Medicare administrative contractor, as requirements may differ. CPT coding is the sole responsibility of the billing party. ARUP Laboratories assumes no responsibility for billing errors due to reliance on the CPT codes published.
85730; if reflexed, add 85732; if reflexed add 85730; 85732
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
Other names that describe the test. Synonyms.
Activated Partial Thomboplastin Time
aPTT
Circulating Anticoagulant
Partial Thromboplastin Time
Partial Thromboplastin Time 1:1
Partial Thromboplastin Time Inhibitor Assay
Partial Thromboplastin Time Mixing Study
PTT
PTT 1:1 Mix
PTT Correction
PTT Inhibitor Assay
PTT Mixing Study
Inhibitor Assay, PTT with Reflex to PTT 1:1 Mix, with Reflex to 1-Hour Incubation
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