Table 3 Intra-/inter-day accuracy (%CV) and precision (%RE) of colistin E2 and CMS E2 in quality control plasma samples (n = 18).

From: A quantitative method for determination of colistin E2 methanesulphonate in human plasma by 15N-labeled colistin E2

Colistin assay

LLOQ

Low

QC

Middle QC1

Middle QC2

High

QC

0.0300

0.0900

0.240

12.0

24.0

Intra-assay

 %CV

5.1–12.7

3.1–6.3

2.7–5.7

2.0–2.2

0.7–1.7

 %RE

 − 5.7–9.3

 − 6.8–2.0

 − 7.9 to − 2.1

0.0–3.3

 − 1.7–0.8

Inter-ASSAY

 %CV

10.8

6.0

5.0

2.4

1.6

 %RE

 − 0.3

 − 3.4

 − 5.8

0.8

 − 0.4

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