25-hydroxyvitamin D or calciferol is produced in the liver and it’s level is an indicator of an individual’s vitamin D status. There are various 25-OH Vitamin D assays for clinical chemistry analyzers available which help to determine the level of calciferol in human serum and plasma. The amount of calciferol is related with absorption of calcium. The normal range of calcidiol is 30.0 to 74.0 ng/mL and it varies widely depending on several factors, including age and geographic location.
Another clinical assay, for CO2 level in the body, aids is mapping the basic metabolic profile or level of electrolytes in the body. Abnormal levels indicate imbalance in body’s electrolytes. The level of electrolytes are controlled by kidney. Deviation from normal indicates fluid retention or fluid loss. The normal range is 23-29 mEq/L (milliequivalents per liter). Carbon dioxide assay kits help determine the level of CO2 in the body.
Lower-than-normal levels indicate addison disease, diarrhea, ethylene glycol poisoning, ketoacidosis, kidney disease and higher than normal levels indicate breathing disorders, cushing's syndrome, hyperaldosteronism.