PTH

Alternative names:

parathormone; parathormone (PTH) intact molecule; parathyroid hormone

Normal values:

10-55 pg/ml

Note: pg/ml = picograms per milliliter

What abnormal results mean:

Greater-than-normal levels may be associated with:

• chronic renal failure
• hyperparathyroidism
• lung cancer
• malabsorption syndrome (inadequate absorption of nutrients in the intestinal tract)
• osteomalacia (adults)
• rickets (children)
• Vitamin D deficiency

Lower-than-normal levels may be associated with:

• autoimmune destruction of parathyroid gland
• hypomagnesemia
• hypoparathyroidism
• metastatic bone tumor
• milk-alkali syndrome (excessive calcium ingestion)
• sarcoidosis
• VD intoxication

Additional conditions under which the test may be performed:

• multiple endocrine neoplasia (MEN) II
• multiple endocrine neoplasia (MEN) I
• secondary hyperparathyroidism