# AI instructs to use a patient's room number or bed label for pre-transfusion blood sample labeling instead of wristband barcode, causing wrong blood in tube (WBIT) error

- **ID:** `medical/transfusion-recipient-identification`
- **Domain:** medical
- **Category:** auth_error
- **Error Code:** `TRANSFUSION-ID-ERR-005`
- **Verification:** ai_generated
- **Fix Rate:** 88%

## Root Cause

Using room number or bed label for sample identification bypasses the two-person verification and barcode scanning required by AABB standards, leading to mislabeled specimens that can cause ABO-incompatible transfusion and fatal hemolytic reactions.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| AABB Standards for Blood Banks and Transfusion Services 33rd Ed (2023) | active | — | — |
| FDA Guidance: Fatalities Reported to FDA Following Blood Collection and Transfusion 2022 | active | — | — |
| Joint Commission National Patient Safety Goal 01.01.01 (2024) | active | — | — |

## Workarounds

1. **Use barcode wristband scanning at the bedside: scan patient wristband -> scan label -> apply label to tube. Two identifiers required (name + DOB or MRN). Verify with: `python -c "import hashlib; print('Scan patient wristband barcode, then scan blank label, then apply label at bedside. Confirm: name=' + input('Enter patient name: ') + ' DOB=' + input('Enter DOB: '))"`** (98% success)
   ```
   Use barcode wristband scanning at the bedside: scan patient wristband -> scan label -> apply label to tube. Two identifiers required (name + DOB or MRN). Verify with: `python -c "import hashlib; print('Scan patient wristband barcode, then scan blank label, then apply label at bedside. Confirm: name=' + input('Enter patient name: ') + ' DOB=' + input('Enter DOB: '))"`
   ```
2. **Implement electronic positive patient identification (ePPID) system: use handheld device to scan wristband, print label at bedside, and apply immediately. Document: `Sample collected via ePPID at 14:30, wristband scanned, label printed and applied at bedside.`** (95% success)
   ```
   Implement electronic positive patient identification (ePPID) system: use handheld device to scan wristband, print label at bedside, and apply immediately. Document: `Sample collected via ePPID at 14:30, wristband scanned, label printed and applied at bedside.`
   ```

## Dead Ends

- **** — Writing 'Room 302 Bed A' on the label because 'the nurse knows which patient it is' — does not meet AABB identification requirements; any misidentification leads to WBIT (85% fail)
- **** — Using a pre-printed label from the chart without verifying against the wristband — labels can be misplaced or belong to the wrong patient (70% fail)
- **** — Scanning the wristband but then hand-writing the label without barcode — hand-written labels are prone to transcription errors (60% fail)