Table 1.

Results of linear regression analysis characterizing the effect of sample temperature (T) ranging from 7–42°C on the plasma glucose concentration ([gluc]) measured by an electrochemical point‐of‐care meter, as well as plasma protein concentration ([PP]) and hematocrit (Hct) for blood from nine periparturient Holstein‐Friesian cattle. Note that sample temperature has a significant linear effect on the measured value for plasma [gluc] in 3/5 plasma samples when plasma [gluc] > 160 mg/dL, with animal to animal variability. The bold is to highlight data points with a significant (P < 0.05) P value for the linear regression equation

[Gluc] at 37°C (mg/dL)	[PP] (g/dL)	Hct (vol %)	P value for linear regression equation	R 2	Linear regression equation (y = a + bx)
30	6.5	30	0.067	0.45	NS
60	6.7	35	0.51	0.07	NS
102	6.1	42	0.09	0.41	NS
125	6.0	35	0.45	0.10	NS
168	6.2	35	0.017	0.64	[gluc] = 159 + 0.33 × T
212	7.4	32	0.33	0.16	NS
269	6.7	33	0.83	0.01	NS
316	6.7	37	0.0050	0.76	[gluc] = 290 + 0.77 × T
409	6.8	35	<0.0001	0.94	[gluc] = 315 + 2.18 × T

NS = not significant.