histaminemia his·ta·mi·ne·mi·a (hĭs’tə-mə-nē’mē-ə, hĭ-stām’ə-) n. The presence of histamine in the blood.
- Histamine test
histamine test n. A test for measuring maximal production of gastric acidity or anacidity, in which, after the administration of an antihistamine, histamine acid phosphate is injected subcutaneously and the gastric contents are then analyzed.
[his-tuh-meen, -min] /ˈhɪs təˌmin, -mɪn/ noun 1. Biochemistry, Physiology. a heterocyclic amine, C 5 H 9 N 3 , released by mast cells when tissue is injured or in allergic and inflammatory reactions, causing dilation of small blood vessels and smooth muscle contraction. 2. Pharmacology. a commercial form of this compound, obtained from and used […]
- Histaminic headache
histaminic headache n. See cluster headache.