Core Concepts
PSA assay consistency in Chinese population.
Stats
"The measured values were 1.1% higher for Roche, 2.1% higher for Abbott, and 6.7% higher for Mindray compared to Beckman for tPSA levels."
"fPSA levels measured by Roche, Abbott, and Mindray were 5.4% lower, 22.1% higher, and 4.6% higher than Beckman, respectively."
"When the %fPSA was 16%, Abbott had the highest missed diagnosis rate (37.50%)."
Quotes
"When the tPSA level is 2–10 ng/mL, the Mindray, like the Roche and Abbott, has good consistency with the Beckman in detecting tPSA."
"However, 4 assays using the same %fPSA cut-off may lead to diverse missed diagnosis rates for PCa screening in China."