Microarray-Based Detection and Clinical Evaluation for Helicobacter pylori Resistance to Clarithromycin or Levofloxacin and the Genotype of CYP2C19 in 1083 Patients

Table 6

Microarray and sequencing results of gyrA at Asp-91.

gyrA D91G/ D91N	Sequencing
	GG/AA	GA	Total
Microarray
GG/AA	52	7	59
GA	5	627	632
Total	57	634	691

A sensitivity of 91.23%, specificity of 98.90%, positive predictive value of 88.14%, and negative predictive value of 99.21% for microarray detection of gyrA at Asp-91.