The Opelousas Trail through Angelina County. The name of the trail and the route outside Angelina County is somewhat confused. Some say it was called the Beef Road (or Trail), but the Texas Highway Department map shown above calls it the Opelousas Trail.
The normal range for serum creatinine (in the blood) is usually between 0.6 and 1.3 milligrams per deciliter (mg/dL) although it varies between labs, between men and women, and by age.
Back to TopNormal Results. The following are normal ranges for the blood chemicals tested: BUN: 7 to 20 mg/dL. CO2 (carbon dioxide): 20 to 29 mmol/L. Creatinine: 0.8 to 1.4 mg/dL. Glucose: 64 to 128 mg/dL. Serum chloride: 101 to 111 mmol/L. Serum potassium: 3.7 to 5.2 mEq/L.