Drugs

Conc.

(ng spot^-1)

Repeatability

(n= 6)

Intermediate precision

(n= 6)

Found conc. ± SD

RSD (%)

Found conc. ± SD

RSD (%)

Levocetirizine

 500

504.07 ± 2.12

   0.42

499.95 ± 0.99

0.20

1500

1497.51± 27.10

1.81

1505.03± 27.84

1.85

2500

2509.37± 37.39

1.49

2501.53± 33.27

1.33

Montelukast sodium

1000

998.50 ± 9.19

   0.92

1009.04 ± 1.92

0.19

3000

3035.91 ± 6.07

0.20

2989.31± 12.26

0.41

5000

4955.98± 60.96

1.23

4911.08± 44.20

0.90

Drugs

Conc.

(µg mL^-1)

Repeatability

(n= 6)

Intermediate precision

(n= 6)

Found conc. ± SD

RSD (%)

Found conc. ± SD

RSD (%)

Levocetirizine

1

0.98 ± 0.002

0.20

1.008 ± 0.000

0.06

4

4.05 ± 0.014

0.34

4.142 ± 0.012

0.28

10

9.97 ± 0.007

0.07

10.280 ± 0.005

0.04

Montelukast sodium

2

1.98 ± 0.002

0.10

1.960 ± 0.003

0.15

8

8.82 ± 0.050

0.06

8.180 ± 0.006

0.07

20

20.860 ± 0.020

0.10

19.910 ± 0.008

0.04