Table 3. Number and direction (positive or negative) of slopes for blood lactate concentration over time for each portable and laboratory analyser. For example, between 2.0 and 4.9 mM Edge B analysed three slopes; one of which was positive and two of which were negative as well as significant.
Analyser
Brand		 Lactate concentration band (mM) All bands
0-1.9 2.0-4.9 5.0-9.9 10.0-14.9 15+
Number Slopes (number +’ve/ number –’ve)
Edge A 4(2/2) 3(1/2) 6(1/5) 3(0/3*) 6(1/5*) 22
Edge B 4(2/2) 3(1/2**) 6(0/6) 3(0/3**) 6(0/6*) 22
i-STAT A 1(1/0) 2(2/0) 3(3/0) 1(1/0) 1(1/0) 8
i-STAT B 1(1*/0) 2(2/0) 3(3/0) 1(0/1) 1(1/0) 8
Lactate Pro A 4(4/0) 3(1/2) 6(3/3) 3(0/3*) 6(0/6) 22
Lactate Pro B 4(3/1) 3(1/2) 6(2/4) 3(1/2) 6(4/2) 22
Lactate Pro2 A 4(2/2) 3(2/1) 6(3/3) 3(1/2) 6(1/5) 22
Lactate Pro2 B 4(3/1) 3(2/1) 6(4/2) 3(1/2) 6(3/3) 22
Radiometer ABL90 4(2*/2) 3(3*/0) 6(3/3**) 3(1/2) 6(3/3) 22
Radiometer 715 2(1/1) 2(1/1) 2(1/1) 6
Scout+ A 4(1/3*) 2(1/1) 6(0/6) 3(0/3**) 6(2/4**) 21
Scout+ B 4(0/4) 2(2/0) 6(1/5) 3(1/2*) 6(0/6**) 21
Xpress A 4(4/0) 3(3/0) 6(3*/3) 3(1/2) 6(2*/4) 22
Xpress B 4(4*/0) 3(3/0) 6(3/3) 3(1/2) 6(5*/1) 22
All analysers 46
(293*/173*)		 37
(251*/122*)		 74
(301*/442*)		 35
(8/277*)		 70
(242*/466*)		 262
* p < 0.05