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Table 2 Intra-day and inter-day precision for determination of the drugs under study

From: Development of green micellar HPLC–DAD method for simultaneous determination of some sulbactam combinations used in COVID-19 regimen

Drug

QC sample (μg mL−1)

Inter-day

Intraday

(CV)*

(CV)*

SLB

150

0.4

0.7

100

0.4

1.7

50

0.08

0.08

CFP

150

0.6

0.6

100

0.8

0.8

50

0.1

0.1

CFX

150

0.8

0.1

100

0.2

0.3

50

0.9

0.3

AMP

150

0.7

0.3

100

0.9

0.5

50

0.1

0.7

  1. *Coefficient of variation (%) = (SD/mean) × 100