Clsi | Ep28

The root cause analysis landed on Aliyah’s desk. She stared at the EP28 document, the same dog-eared copy she’d used for twenty years. And then she read the section she’d always skimmed:

Aliyah recruited 120 healthy volunteers from hospital staff: non-pregnant, no chronic meds, no thyroid history. She drew their blood in the gold-top tubes at 8:00 AM sharp, spun them down, and ran them in duplicate. The data came back clean—but wrong. clsi ep28

The lower limit of her in-house reference interval was 0.6 mIU/L. The upper limit was 3.2. The root cause analysis landed on Aliyah’s desk