Test Directory
| Test Code | ||
| TTIA | ||
| Test Name | ||
| Tissue Thromboplastin Inhibition | ||
| CPT Codes | ||
| 85705 | ||
| Expected Turnaround Time | ||
| 4 - 10 days | ||
| Specimen and Container Info | ||
|
Preferred Specimen Type: Citrated Plasma
Preferred Collection Container: Light Blue Top (Sodium Citrate) Desired Specimen Volume: 1 mL |
||
| Collection Instructions | ||
|
Collect specimen in light blue top (sodium citrate) tube via venipuncture. Centrifuge and transfer citrated plasma to plastic aliquot tube. |
||
| Processing and Submission Instructions | ||
|
Do not draw from an arm with a heparin lock or heparinized catheter. Separate specimens must be submitted when multiple tests are ordered. |
||
| Transport Instructions | ||
|
Transport to the laboratory frozen. |
||
| Stability Requirements | ||
|
||
| Methodology | ||
| Clotting | ||
| Reference Intervals | ||
|
See patient report. |
||
| Reference Lab | ||
| ARUP Laboratories | ||
| Testing Schedule | ||
| Varies | ||
The American Medical Association (AMA) Current Procedural Terminology (CPT) codes published by HNL Lab Medicine are guidelines and are intended for informational purposes only. CPT coding is the exclusive responsibility of the billing entity. View the Terms.
© 2026 HNL Lab Medicine. All rights reserved.