Table 3.

Electrolyte and venous blood gas reference intervals for Passeriformes from Texas

Analyte	Units	Birds sampled	Mean	95% CI	P value
Base excess	mmol/L	91	2.74	1.8–3.7	0.619
BUN*	mmol/L	55	1.18	0.96–1.39	<0.0001
Chloride	mmol/L	66	124.2	123.1–125.4	0.220
Glucose*	mmol/L	86	18.59	17.68–19.51	0.028
Bicarbonate	mmol/L	91	24.45	23.62–25.27	0.565
Hgb	g/dL	92	141.7	138.5–144.9	0.039
Hct	Proportion of 1	92	0.417	0.408–0.426	0.057
iCa	mmol/L	32	0.268	0.258–0.276	0.986
Potassium	mmol/L	91	4.10	3.93–4.27	0.480
Lactate	mmol/L	63	4.55	4.25–4.86	0.157
pCO2	mmHg	91	26.05	25.03–27.07	0.598
pCO2TC	mmHg	91	31.40	30.16–32.64	0.532
PCV*	%	104	56.7	55.4–58.0	0.044
pH	pH at 37°C	91	7.583	7.563–7.601	0.452
pHTC	pH at 41.3°C	91	7.514	7.498–7.532	0.452
pO2*	mmHg	91	38.4	37.2–39.5	0.004
pO2TC*	mmHg	91	51.97	50.4–53.5	0.005
sO2	%	91	81.1	79.6–82.7	0.043
Sodium	mmol/L	92	156.3	155.3–157.3	0.151
TCO2	mmol/L	91	25.3	24.5–26.2	0.207

Notes: Normal distribution, P>. 0.05, while analytes with non-normal distributions are denoted*. Temperature-dependent variables listed at 37°C and temperature-corrected (TC subscript) to 41.33°C.

Abbreviations: TCO₂, total CO₂; BUN, blood urea nitrogen; Hct, hematocrit; Hgb, hemoglobin; PCV, packed cell volume; pO₂, oxygen partial pressure, venous; sO₂, dissolved oxygen, venous; iCa, ionized calcium.