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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.