Ellsworth-Howard test

Ells·worth-How·ard test

(elz'wŏrth how'ărd),
measurement of serum and urinary phosphorus after intravenous administration of parathyroid extract; used in the diagnosis of pseudohypoparathyroidism.

Ellsworth-Howard test

A term of waning use for the administration of exogenous parathyroid hormone to distinguish primary hypoparathyroidism—in which the urinary phosphate levels rise 10-fold or more above baseline levels—from pseudohypoparathyroidism—in which they essentially do not rise.


Read McLane, U.S. physician, 1899-1970.
Ellsworth-Howard test - used in the diagnosis of pseudohypoparathyroidism.


John Eager, U.S. internist and endocrinologist, 1902-1985.
Ellsworth-Howard test - see under Ellsworth
Howard test - a differential ureteral catheterization test.
References in periodicals archive ?
Standard procedure and the diagnostic criteria for the Ellsworth-Howard test using human PTH-(1-34).