patch test

(redirected from Patch tests)
Also found in: Dictionary, Thesaurus, Medical, Legal, Financial.
Related to Patch tests: TRUE test

patch test

[′pach ‚test]
(immunology)
A test in which material is applied and left in contact with intact skin surfaces for 48 hours in order to demonstrate tissue sensitivity.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
More than two-thirds of positive patch test reactions to nickel were found to be extreme or strong, Dr.
In at least one case described there was a concurrent reproducibility of positive thiuram patch tests.
Patient education regarding patch test process should be done by giving written and verbal instructions.7
In the case presented here, the results of patch tests on intact skin (negative in immediate reading) and open tests (positive only on inflamed skin) may indicate that epicutaneously applied TCD can induce an immediate reaction only when a damaged epidermal barrier is present.
As an internal measure of validity, the correlation of positive patch test reactions for the remaining 30 allergens was compared given a positive or negative reaction to nickel.
performed patch tests using a commercial patch test series on patients suspected of textile dye dermatitis, and the results were compared with the dyes identified in that patient's submitted fabric(s).
* Patients on systemic corticosteroids, immunosuppressants, PUVA therapy for at least 2 weeks prior to patch test.
Table 1 shows the MTD values from volumetric sand patch tests, along with the ETD values, calculated from Eqns (2) and (3) using the MPD values from the Ames laser texture scanner, Dynatest laser profiler, and CT meter tests, respectively.
Some of the products she uses still contain a small amount of PPD and she patch tests all her clients.
But out of the 30 salons, 25 failed to suggest the customer have a patch test to see if they were allergic to the dye before having the treatment done.