Concentration

Repeatability (n = 6)

Intermediate precision (n = 6)

µg/mL

Potassium

Magnesium

Calcium

Day 1

Day 2

Potassium

Magnesium

Calcium

Potassium

Magnesium

Calcium

Theoretical

2.00

0.75

1.25

2.00

0.75

1.25

2.00

0.75

1.25

Measured

1.99

0.76

1.26

2.01

0.74

1.26

2.02

0.74

1.26

% RSD

0.63

0.91

1.01

0.21

0.54

0.78

0.23

0.87

0.91