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Table 1 A comparison of lactic acid concentrations detected between StatStripXPress handheld meter and automated lactate analyser (Abx Pentra 400) results for amniotic fluid collected under sterile conditions and spiked with a known quantity of lactate

From: A validation study: assessing the reliability of the hand held StatStripXPress lactate meter to test lactate in amniotic fluid

 

StatStripXPress

AbX Pentra 400

Concentration (mmol/L)

Concentration + baseline (mmol/L)

Mean ± SD§(mmol/L)

Concentration + baseline (mmol/L)

mmol/L

Baseline (pre-freeze)

 

9.1 ± 0 .40

Not tested

 

Baseline (post-thaw)

 

8.6 ± 0.60

7.70

7.7

5

13.6

11.6 ± 1.24

12.7

12.2

6

14.6

13.9 ± 1.86

13.7

13.8

7

15.6

15.6 ± 2.27

14.7

14.1

8

16.6

13.2 ± 4.76

15.7

15.0

9

17.6

15.1 ± 1.73

16.7

16.0

10

18.6

16.5 ± 1.58

17.7

16.8

11

19.6

17.1 ± 3.71

18.7

17.2

12

20.6

17.8 ± 2.29

19.7

17.7

13

21.6

Hi*

20.7

21.6

14

22.6

Hi*

21.7

19.4

15

23.6

Hi*

22.7

20.9

16

24.6

Hi*

23.7

22.0

18

26.6

not tested

25.7

23.2

20

28.6

not tested

27.7

25.2

  1. §Measurements were performed in triplicate.
  2. *Manufacturers instructions for the StatStripXPress indicate The Lactate Pro will display “Lo” when lactate levels are below 0.3 mmol/L and “Hi” will be displayed when lactate > 20 mmol/L.