* Product specifications and parameters are subject to the Instruction for Use.

OST is a bone-specific protein whose level reflects the activity of osteoblasts. Based on the variation of OST level, one can distinguish the type of osteoporosis to be either high-turnover or low-turnover.OST level can also be used to monitor the therapeutic effects of bone resorption inhibitors and bone growth stimulators.

Calcitonin (CT) is secreted by thyroid parafollicular cells (or named C cells), which has the primary function of reinforcing osteogenesis. Oestrogen can up-regulate the secretion of CT. Reduction of CT level could be a primary cause of the onset of postmenopausal osteoporosis. CT is an ultra-sensitive tumor marker in diagnosing medullary thyroid cancer (MTC). It can be used in the early preoperative diagnosis, postoperative follow-up and also treatment effectiveness evaluation of MTC.

25OH-VD is a steroid that supports the mineralization of osteoid and some other vitamins, hormones and minerals.It plays an important role in the formation and maintenance of strong bones. Serum 25OH-VD level is currently the well-acknowledged golden standard for evaluating VD nutritional status. Based on the gross amount 25OH-VD in the serum, one can determine the VD nutritional status of a human body. Vitamin D is also related to immune regulation, cardiovascular diseases, hypertension, diabetes, chronic renal diseases, auto-immune diseases, inflammation and common tumors.

Parathyroid hormone (PTH), para-thormone or parathyrin, is secreted by the chief cells of the parathyroid glands as a polypeptide containing 84 amino acids. PTH controls the level of calcium in the blood, which is a mineral that keeps your bones and teeth healthy and strong. PTH also plays an important role in controlling the levels of phosphorus and vitamin D in the blood.