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Table 1 Screening Test Kits for HBsAg Used at Each Blood Center

From: The current incidence, prevalence, and residual risk of hepatitis B viral infections among voluntary blood donors in China

Blood Center First Assay Second Assay
Test Kit Sensitivity (%) / Specificity (%) / Limit (ng/ml) Test Kit Sensitivity (%) /Specificity (%) / Limit (ng/ml)
Anhui WANTAI (Beijing) 99.5 / 98.5 / 0.03 BIO-RAD (United States) 100 / 97.55 / ND
Fujian BIO-RAD (United States) 100 / 97.55 / ND WANTAI (Beijing) 99.5 / 98.5 / 0.03
Dalian InTec (Xiamen, China) 100 / 98.6 / ND BIO-RAD (United States) 100 / 97.55 / ND
Changzhi BIO-RAD (United States) 100 / 97.55 / ND InTec (Xiamen, China) 100 / 98.6 / ND
Kaifeng BIO-RAD (United States) 100 / 97.55 / ND WANTAI (Beijing) 99.5 / 98.5 / 0.03
Mianyang WANTAI (Beijing) 99.5 / 98.5 / 0.03 BIO-RAD (United States) 100 / 97.55 / ND
  1. ND no data
  2. WANTAI Beijing WANTAI Biological Pharmacy Enterprise Co., Ltd.
  3. BIO-RAD BIO-RAD Clinical Diagnostics
  4. InTec Xiamen InTec Biological Pharmacy Enterprise Co., Ltd.