Drugs Regression equations R2 LOD* ng/mL LOQ** ng/mL
Captopril y = 1883.8x - 1856.6 0.9993 1.75 5.3
Famotidine y = 21249x + 2854.7 0.9995 0.15 0.47
Cimetidine y = 27570x - 1123 0.9999 0.12 0.36
Ranitidine y = 17239x - 1479.9 0.9995 0.3 0.9
Limit of detection, **limit of quantification
Table 1: Regression statistics LOD and LOQ.