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U.S. Army Medical Materiel Development Activity

Analyzer Traumatic Brain Injury (ATBI)


  • The Analyzer, Traumatic Brain Injury (ATBI) is FDA approved to rule out the need for a CT scan for patients suspected of having a traumatic brain injury (TBI).
  • In conjunction with other clinical data, this assessment tool helps theater-based medical providers assess, triage and manage TBI casualties by providing confidence as an objective TBI assessment.


  • Inform evacuation decisions at Role 2 and 3 locations within the deployed environment, enabling strategic use of potentially limited evacuation assets in Large Scale Combat Operations.
  • If available during Counter Insurgency Operations from 2002-2018, the ATBI may have prevented approximately 33% of all rotary-wing evacuations for isolated mild TBI.

To date, the ATBI has been utilized in multiple clinical labs within USCENTCOM as part of a user touchpoint, informing its impact on clinical workflow and operation in the deployed setting.

Initial fielding to the Army is anticipated to start in 2025.

TBI Whole Blood Test Process Description:

  1. Draw venous whole blood from patient sample using a pipette.
  2. Apply 20µL of patient sample to sample-well on i-STAT TBI cartridge.
  3. Insert the cartridge into the i-STAT Alinity device and wait for test to complete.
  4. Retrieve and interpret test results.

TBI Test Results are qualitative, but also include semi-quantitative values. **Currently, quantitative values are not FDA approved/cleared to inform patient assessment or care.

  • Elevated: Represented by an upward pointing arrow. Patient sample contains analytes in quantities that are outside the normal range (top, left and right figures).
  • Non-Elevated: Patient sample contains analytes in quantities that rule out the need for a head CT scan (bottom, left and right figures).
ATBI Images

Last Modified Date: 07/09/2024