The thoracic spine (upper back) has a normal outward curvature that is medically referred to as kyphosis or the kyphotic curve by which the spine is bent forward. In this discussion, the term kyphosis will be used to discuss abnormal kyphosis. The spine is normally straight when looking from the front.
A parathyroid hormone (PTH) blood test measures the level of parathyroid hormone in the blood. This test is used to help identify hyperparathyroidism, to find the cause of abnormal calcium levels, or to check the status of chronic kidney disease. PTH controls calcium and phosphorus levels in the blood.
A prothrombin time (PT) test measures the amount of time it takes for your blood plasma to clot. Prothrombin, also known as factor II, is just one of many plasma proteins involved in the clotting process. Advertisement. Advertisement.