serum concentration
Medical term referring to the concentration of a substance in blood serum, such as a drug, hormone, or metabolite.
It is necessary to measure the serum concentration of this drug regularly.
When the serum concentration exceeds the therapeutic range, the risk of side effects increases.
血中濃度 is a broader term for blood concentration, while 血清濃度 specifically refers to concentration in the serum component after blood has clotted.
Compound of 血清 (けっせい, 'blood serum') and 濃度 (のうど, 'concentration').