scratch test


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scratch test

 [skrach]
a skin test for hypersensitivity in which a minute amount of the substance in question is inserted in small scratches made in the skin. A positive reaction is swelling and reddening at the site within 30 minutes. It is used in allergy testing and in testing for tuberculosis (pirquet's reaction).
Scratch test.

scratch test

a form of skin test in which antigen is applied through a scratch in the skin.

scratch test

n.
A test for allergy performed by scratching the skin and applying an allergen to the wound.

scratch test

Etymology: ME, scratten + L, testum, crucible
a skin test for identifying an allergen, performed by placing a small quantity of a solution containing a suspected allergen on a lightly scratched area of the skin. If a wheal forms within 15 minutes, allergy to the substance is indicated. Compare patch test.

scratch test

(skrach test)
A form of skin test in which antigen is applied through a scratch in the skin.

scratch test

(skrach test)
A form of skin test in which antigen is applied through a scratch in the skin.

scratch test,

n a skin test for identifying an allergen, performed by placing a small quantity of a solution containing a suspected allergen on a lightly scratched area of the skin. If a wheal forms within 15 minutes, allergy to the substance is indicated.

scratch test

a test for hypersensitivity in which a minute amount of the substance in question is inserted in small scratches made in the skin. A positive reaction is swelling and reddening at the site within 30 minutes. Used in allergy testing and in testing for tuberculosis. In animals, intradermal testing is used more commonly. See also skin test.
References in periodicals archive ?
Nine PP systems were synthesized to investigate the coupling effect of elastic modulus and yield strength on the scratch behavior of PP using an integrated approach of scratch test and finite element simulation.
There was a significant change to a similar extent in back scratch test after intervention on spike skill assessment day both in CycSG (p=0.
Later investigators expanded upon the scratch test to include not only more sophisticated instrumentation for controlling the load program of the stylus and advanced microscopy for observing the scratch track but also coupling of the scratch method with acoustic spectroscopy whereby the sound vibrations generated by the stylus are detected and recorded at the same time that the scratch track Is being formed.
Figures 11, 12, and 13 show the tracks corresponding to the TiAIN multilayer and TiN/TiAIN nano-multi-layer coating after the scratch test.
To evaluate the deformation and fracture behaviors of printed paperboard surfaces, the scratch test was carried out and the AE method was used simultaneously.
The dependence of the shape, size, optical and mechanical properties of PVP and Ag/PVP nanocomposit layers in MEMS on UV irradiation time and silver salts concentration were investigated by UV-VIS spectroscopy, custom made scratch test apparatus and AFM.
The patient was given a scratch test, and she proved to be highly dermatographic.
The progressive load scratch test according to ISO 19252 was conducted using a scratch instrument model KK-02 (KATO Tech) at room temperature.
Scratch tests were performed in "progressive load" mode (Micro-Combi, CSM Instruments, Peseaux, Switzerland), using a Rounded Conical Rockwell C diamond indenter, with 800 [micro]m tip radius, 1 mm/min sliding speed, 100 mN-30 N incremental load, and 3 mm scratch pattern.
I recently came upon an excellent paper on measuring wet adhesive strength via a scratch test [H.
Consequently, the normal and tangential scratch hardness as well as the ratio h/ [square root of (term)]A are constant during the loading sequence of a scratch test on homogeneous materials and stresses and strains are functions of the dimensionless variables [x.
Wavelet transform (WT) was applied to AE signals coming from scratch test (ST) on corroded galvanized steel.