Error grid analysis of 5, 10, 15 and 20 mmol/L glucose testing samples of BGMs (y- axis) against reference (GHex) (x-axis) at 5000 m simulated altitude.

<p>Note: Leftward deviation from dashed line means overestimation of true glucose by tested BGM compared to GHex reference glucose and vice versa. Black diamonds  =  Contour; Black squares  =  Accu Chek Aviva; Black circles  =  Accuchek Compact Plus; Black triangles  =  Freestyle Mini; Black asterixes  =  Precision; Black stripes  =  Hemocue; White squares  =  Klinion; White circles  =  Statstrip; White diamonds  =  Glucocard; Dashed line  =  GHex reference glucose.</p

GOX and GDH based BGMs at Mount Kilimanjaro at different altitudes tested with standard glucose solutions.

<p>GOX and GDH based BGMs at Mount Kilimanjaro at different altitudes tested with standard glucose solutions.</p

Relative bias (%) of GOX based BGMs compared to the Hexokinase laboratory reference method at different simulated altitudes (10 mmol/L glucose sample).

<p>Note: normobaric BGMs stay at sea level. (normo =  bias under normobaric conditions (sea level); hypo =  bias under hypobaric conditions (simulated altitude),</p><p>* =  reference method).</p

Error grid analysis of 5, 10, 15 and 20 mmol/L glucose testing samples of BGMs (y- axis) against reference (GHex) (x-axis) at sea level.

<p>Note: Leftward deviation from dashed line means overestimation of true glucose by tested BGM compared to GHex reference glucose and vice versa. No differences were noted outside of predefined criteria due to testing conditions at sealevel (0 m) in and outside the hypobaric chamber. Black diamonds  =  Contour; Black squares  =  Accu Chek Aviva; Black circles  =  Accuchek Compact Plus; Black triangles  =  Freestyle Mini; Black asterixes  =  Precision; Black stripes  =  Hemocue; White squares  =  Klinion; White circles  =  Statstrip; White diamonds  =  Glucocard; Dashed line  =  GHex reference glucose.</p