Drug name 1st day µg/ml 2nd day µg/ml 3rd day µg/ml pooled average  pooled average % RSD
Hydrochlorothiazide 12.60 12.41 12.58 12.52 100.22 0.80%
Irbesartan 150.68 149.51 148.59 149.59 99.73 0.70%
Losartan potassium 50.23 49.92 49.48 49.88 99.78 0.75%
Telmisartan 80.52 80.00 80.18 80.23 100.29 0.32%
Valsartan 80.36 79.86 78.91 79.71 99.60 0.92%
Table 3: Intermediate precision of Hydrochlorothiazide, Irbesartan, Losartan potassium, Telmisartan and Valsartan respectively.