Table 2 Summary of disagreements in critical range and values outside of acceptable comparative range between laboratory and POCT by analyte and manufacturer

Analyte

Lab to i-STAT

Lab to epoc

epoc to i-STAT

Total

Sodium

1/101

1/102

2/101

4/304 (1.3%)

Potassium

2/101

0/101

1/100

3/302 (1.0%)

Chloride

n/a

n/a

n/a

n/a

Creatinine

n/a

n/a

n/a

n/a

Hematocrit

n/a

n/a

n/a

n/a

Hemoglobin

0/83

0/84

0/100

0/267 (0.0%)

 < 5 mmol/L

0/8

0/8

0/8

0/24 (0.0%)

 ≥ 5 mmol/L

0/29

0/29

0/92

0/150 (0.0%)

 Total

3/322 (0.9%)

1/324 (0.3%)

3/401 (0.7%)

7/1047 (0.7%)

Analyte

Lab to i-STAT

Lab to epoc

epoc to i-STAT

Total

Sodium

2/101

2/102

1/101

5/304 (1.6%)

Potassium

10/101

9/101

1/100

20/302 (6.6%)

Chloride

5/101

14/101

10/100

29/302 (9.6%)

Creatinine

4/100

10/98

7/98

21/296 (7.1%)

Hematocrit

0/83

17/84

3/100

20/267 (7.5%)

Hemoglobin

n/a

n/a

n/a

n/a

 < 5 mmol/L

5/8

2/8

3/8

10/24 (41.7%)

 ≥ 5 mmol/L

6/29

2/29

13/92

21/150 (14.0%)

 Total

32/523 (6.1%)

56/523 (10.7%)

38/599 (6.3%)

126/1645 (7.7%)