Meta: 1,500-sample comparison using ICSH reference method. Runmei r=0.998. Lipemic sample bias: Runmei +0.1 g/dL vs Brand B +1.3 g/dL.
Hb Accuracy Affects Transfusion Decisions
Small biases can change transfusion decisions. 1,500 samples compared using ICSH cyanmethemoglobin reference.
Results vs Reference Method
• Runmei (12-wavelength): r=0.998, intercept -0.08 g/dL
• Brand A (6-wavelength): r=0.991, intercept 0.23 g/dL
• Brand B (4-wavelength): r=0.987, intercept 0.41 g/dL
Brand B: positive bias at normal levels, negative bias (-0.38 g/dL) in anemic samples. True Hb 7.2 could read 6.8 — potentially triggering unnecessary transfusion.
Lipemic Sample Performance
34 lipemic samples (TG > 500 mg/dL): Runmei bias +0.1 g/dL vs reference. Brand A +0.9 g/dL. Brand B +1.3 g/dL. 12-wavelength spectral correction is the key.
Auto-detection of MCHC > 370 as cold agglutinin screen. Catches discordant Hb/HCT before results release.
