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Table 4 Agreement between FTIR-based predictions and LC–MS/MS quantitation of residual TFV on gel applicators (n = 197; 122 TFV, 75 placebo)

From: Application of a composite measure of product adherence, protocol compliance, and semen exposure to a phase III microbicide HIV prevention trial

  

LC–MS/MS

  

TFV + 

TFV-

FTIR

TFV + 

101

2

TFV-

21

73