| Howard test | A differential ureteral catheterization test performed by the insertion of bilateral ureteral catheters to measure simultaneous urinary volume and sodium concentration in patients with suspected renovascular hypertension. (05 Mar 2000) |
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| Ellsworth-Howard test | Measurement of serum and urinary phosphorus after intravenous administration of parathyroid extract; used in the diagnosis of pseudohypoparathyroidism. (05 Mar 2000) |
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| Payne, J Howard | <person> U.S. Surgeon, *1916. See: Payne operation. (05 Mar 2000) |
| Ricketts, Howard | <person> U.S. Pathologist, 1871-1910. See: Rickettsia. (05 Mar 2000) |
| Moloy, Howard | <person> U.S. Obstetrician, 1903-1953. See: Caldwell-Moloy classification. (05 Mar 2000) |
| Hailey, W Howard | <person> U.S. Dermatologist, 1898-1967. See: Hailey-Hailey disease. (05 Mar 2000) |
| Howard, John Eager | <person> U.S. Internist and endocrinologist, 1902-1985. See: Howard test, Ellsworth-Howard test. (05 Mar 2000) |
| Tooth, Howard | <person> English physician, 1856-1925. See: Charcot-Marie-Tooth disease. Synonym: dens. (05 Mar 2000) |
| Kelly, Howard | <person> U.S. Gynecologist, 1858-1943. See: Kelly clamp, Kelly's operation, Kelly's rectal speculum. (05 Mar 2000) |
| Usher, Charles Howard | <person> English ophthalmologist, 1865-1942. See: Usher's syndrome. (05 Mar 2000) |
| Florey, Sir Howard | <person> Australian-British pathologist and Nobel laureate, 1898-1968. See: Florey unit. (05 Mar 2000) |
| Futcher, Palmer Howard | <person> U.S.-Canadian physician, *1910. See: Futcher's line. (05 Mar 2000) |
| Abbe test plate | <equipment> A long, wedge-shaped coverslip about 0.20 mm thick at one end and 0.10 to 0.12 mm at the other end coated chemically with a silver film on which are ruled horizontal lines. at each variation in thickness of 0.01 mm there are vertical lines. By means of oblique illumination and by focusing on different portions of the plate, it is possible to determine the optimum coverslip thickness for any objective and also, for microscopes with drawtubes, the tube length for best objective performance. The approximate freedom from spherical and chromatic aberrations can also be estimated. Small isolated bits of silver near the edges of the lines form good objects for the star test (05 Aug 1998) |
| acetone test | A test for ketonuria; the suspected urine is shaken up with a few drops of sodium nitroprusside, and strong ammonia water is then gently poured over the mixture; if acetone is present, a magenta ring forms at the line of contact; tablets containing sodium nitroprusside and alkali are now more commonly used. (05 Mar 2000) |
| achievement test | A standardised test used to measure acquired learning, e.g., competence in a specific subject area such as reading or arithmetic, in contrast to an intelligence test which is a useful index of potential ability or learning. (05 Mar 2000) |
| acidified serum test | Lysis of the patient's red cells in acidified fresh serum, specific for paroxysmal nocturnal haemoglobinuria. Synonym: Ham's test. (05 Mar 2000) |