Table 4 Tests of assay precision for GAB and MET in marketed formulations.

From: Green and white analytical approach for parallel quantification of gabapentin and methylcobalamin in medicinal products using inventive RP-HPLC technique

Test

GAB

MET

1st analyst (within a day)

2nd analyst (between 3 consecutive days)

1st analyst (within a day)

2nd analyst (between 3 consecutive days)

Test 1

100.23

100.10

100.55

99.79

Test 2

100.08

100.22

100.24

99.96

Test 3

100.52

100.16

99.86

100.21

Test 4

100.12

99.96

100.06

100.05

Test 5

100.14

100.64

99.80

99.89

Test 6

100.05

100.52

100.40

100.20

Average

100.19

100.27

100.15

100.02

SD

0.172974

0.260359

0.29

0.17

RSD

0.17

0.26

0.29

0.17

Pooled RSD (12 samples)

0.06

0.09