Siding Options. The popular choice out there is vinyl because theyâre cost effective and easy to install and maintain. Some things to consider with vinyl is that the color can fade, and the siding become brittle with time. For homeowners who prefer to go with wood, there is hardwood, cypress, clapboard, wood shingles, and plywood siding.
Digestive System. Elevated PTT results may be caused by malabsorption, a digestive problem that restricts the amount of nutrients that the body absorbs from food, according to the U.S. National Library of Medicine.
High values. High PTH levels may be caused by: 1  A parathyroid gland growth (hyperplasia) or a parathyroid tumor. 2  A low level of calcium in the blood. 3  A low blood calcium level can be caused by kidney disease, kidney failure, severe vitamin D deficiency, or an inability of the intestines to absorb calcium from food.ow values. Low PTH levels may be caused by: 1  Damage to the parathyroid gland, which can by caused by neck surgery or radiation treatments. 2  A rare disease, such as sarcoidosis or histiocytosis X. 3  An overdose of vitamin D or calcium. 4  Cancer, such as lymphoma or multiple myeloma. 5  A low magnesium level.