| HA | H antigen; Hakim-Adams [syndrome]; halothane anesthesia; Hartley [guinea pig]; headache; health alli... |
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| HPAA | hydroperoxyarachidonic acid; hydroxyphenylacetic acid; hypothalamo-pituitary-adrenal axis |
| IA | ibotenic acid; immune adherence; immunoadsorbent; immunobiologic activity; impedance angle; indolami... |
| iRNA | immune ribonucleic acid; informational ribonucleic acid |
| KA | alkaline phosphatase; kainic acid; keratoacanthoma; keto acid; ketoacidosis; King-Armstrong [unit] |
| Millon-Nasse test | A test for protein, the tyrosine of which reacts with nitrite after a brief treatment with mercuric ion in acid to give a colour. (05 Mar 2000) |
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| Clauberg test | A test for progestational activity; immature rabbits are treated with 8 daily injections of oestrogen and then given 5 daily injections of the test substance; the amount required to produce definite progestational changes in the endometrium is taken as the unit; it is equivalent to 0.75 mg of progesterone. (05 Mar 2000) |
| photo-patch test | A test of contact photosensitization: after application of a patch with the suspected sensitiser for 48 hours to two sites, if there is no reaction one area is exposed to a weak erythema dose of sunlight or ultraviolet light; if positive, a more severe reaction with vesiculation develops at the exposed patch area than the nonexposed skin patch site. (05 Mar 2000) |
| Minnesota multiphasic personality inventory test | A questionnaire type of psychological test for ages 16 and over, with 550 true-false statements coded in 4 validity and 10 personality scales which may be administered in both an individual or group format. Synonym: Minnesota Multiphasic Personality Inventory. (05 Mar 2000) |
| photostress test | Measurement of visual acuity before and after exposure of the eyes to intense light. (05 Mar 2000) |
| phrenic pressure test | Pressure is made on the phrenic nerve on each side, above the clavicles where the nerve passes over the scalenus anticus muscle; if pain is felt and the patient inclines his head to the painful side, the problem is in the pleural space; if his head does not incline to one side, the problem is in the abdominal cavity. (05 Mar 2000) |
| clomiphene test | A test of pituitary gonadotropin reserve using clomiphene. (05 Mar 2000) |
| phthalein test | An obsolete test for renal function; after the patient has drunk a glass or two of water, 1 ml of a 0.6% solution of dye is injected hypodermically; the time between this injection and the appearance of a pink tinge in the urine as it falls into an alkaline solution is noted; the amount excreted in each of the next 2 hours is then estimated colourimetrically. Synonym: Geraghty's test, phthalein test, red test, Rowntree and Geraghty test. (05 Mar 2000) |
| mixed lymphocyte culture test | Measure of histocompatibility at the hl-a locus. Peripheral blood lymphocytes from two individuals are mixed together in tissue culture for several days. Lymphocytes from incompatible individuals will stimulate each other to proliferate significantly (measured by tritiated thymidine uptake) whereas those from compatible individuals will not. In the one-way mlc test, the lymphocytes from one of the individuals are inactivated (usually by treatment with mitomycin c or radiation) thereby allowing only the untreated remaining population of cells to proliferate in response to foreign histocompatibility antigens. (12 Dec 1998) |
| MLC test | Measure of histocompatibility at the hl-a locus. Peripheral blood lymphocytes from two individuals are mixed together in tissue culture for several days. Lymphocytes from incompatible individuals will stimulate each other to proliferate significantly (measured by tritiated thymidine uptake) whereas those from compatible individuals will not. In the one-way mlc test, the lymphocytes from one of the individuals are inactivated (usually by treatment with mitomycin c or radiation) thereby allowing only the untreated remaining population of cells to proliferate in response to foreign histocompatibility antigens. (12 Dec 1998) |
| CO2-withdrawal seizure test | Utilization of hyperventilation to demonstrate abnormalities in the brain waves or even to precipitate a convulsion. (05 Mar 2000) |
| Wada test | <investigation> Unilateral internal carotid injection of amobarbital to determine the laterality of speech; injection on the dominant side causes transient aphasia or mutism; used prior to surgical treatment of epilepsy. (05 Mar 2000) |
| Waldenstrom's test | A test for porphyrin in the urine; 2 ml of urine are mixed with an equal amount of 2% dimethyl-p-aminobenzaldehyde in 50/100 HCl. A red colour appears if urobilinogen (Ehrlich's benzaldehyde reaction) or porphobilinogen is present. (05 Mar 2000) |
| coccidioidin test | An intracutaneous test for determining the presence of infection with the fungus Coccidioides immitis; a reaction of delayed hypersensitivity indicates a positive test and is interpreted as meaning past or present infection with the fungus. (05 Mar 2000) |
| Wang's test | A quantitative test for indican, which is transformed into indigo-sulfuric acid and then titrated by a solution of potassium permanganate. (05 Mar 2000) |