Test Sample Type
- Serum, urine
Normal Values
- Serum
-
- Adult: 8.2-10.2 mg/dl.
- Infant-1 month: 7-11.5 mg/dl.
- Child, 1month-1 year: 8.6-11.2 mg/dl
- Urine
- Adult: 100-300 mg/day,
-
- Infant and child: < 6 mg/kg/day
Purpose of the Test
- To assist in diagnosis of acid-base imbalance, coagulation disorders, pathologic bone disorders, endocrine disorders, cardiac arrhythmia, muscle disorders
Increase in
- Hyperparathyroidism.
- Polycythemia vera
- Metastatic cancer
- Pheochromocytoma
- Multiple myeloma
- Sarcoidosis
- Vitamin D intoxication,
- Thyrotoxicosis,
- Adrenal insufficiency
- Bacteremia
- Milk-alkali syndrome
- Dehydration
- Overdose of calcium antacids
- Paget’s disease
- Idiopathic hypercalcemia of infancy.
Decrease
- Hypoparathyroidism
- Acute pancreatitis
- Vitamin-D deficiency
- Chronic renal failure
- Anterior pituitary hypofunction
- Alcoholism
- Renal tubular disease
- Hypoalbuminemia
- Cirrhosis of the liver
- Massive blood transfusion
- Malnutrition
- Neonatal Prematurity
- Prolonged intravenous fluid therapy
Interfering Factors
Hemolysis, prolonged storage of blood specimen.