The fee for micronutrient testing varies at different levels of hospitals, and is usually$60 at a tertiary care hospital. Instead of drawing blood from a vein, a fingertip blood test is usually sufficient. Trace elements usually include calcium, iron and magnesium. Calcium deficiency can lead to rickets, osteomalacia, or osteoporosis, so it is important to increase sun exposure and drink plenty of high-calcium foods such as milk. In addition, zinc deficiency can lead to loss of taste and affect the development of hair as well as the development of the nervous system, so it is appropriate to increase foods such as oysters or take zinc-containing drugs, and iron deficiency can lead to iron-deficiency anemia.