Table 1.

Characteristics of 120 apparently healthy cats ≥ 9 years from which the reference interval for plasma total magnesium concentration was derived

Variable (reference interval)	Median [25th, 75th Percentile]	n
Age (years)	12.4 [11.1, 14.0]	120
Weight (kg)	4.51 [3.81, 5.20]	120
Creatinine (0.23–2.00 mg/dL)	1.45 [1.32, 1.65]	120
USG (≥1.035)	1.048 [1.040, 1.058]	80
Phosphate (2.79–6.81 mg/dL)	3.85 [3.28, 4.30]	120
Total calcium (8.2–11.8 mg/dL)	9.8 [9.4, 10.2]	120
Total protein (6.0–8.0 g/dL)	7.7 [7.3, 8.0]	120
Albumin (2.5–4.5 g/dL)	3.3 [3.0, 3.4]	120
PCV (30%–45%)	38 [35, 41]	120
Sodium (145–157 mEq/L)	152 [152, 154]	120
Potassium (3.5–5.5 mEq/L)	3.9 [3.7, 4.2]	120
Chloride (100–124 mEq/L)	119 [117, 121]	120
SBP (<160 mm Hg)	136 [120, 150]	120

Abbreviations: PCV, packed cell volume; SBP, systolic blood pressure; USG, urine specific gravity.