1. The patch test plays a significant role in diagnosing ACD. 2. A patch test is frequently recommended, as per manufacturer's directions. 3. In 2005 06, fragrance-mix was the third-most-prevalent allergen in patch tests ( 11.5 % ). 4. The allergy can be discovered via a patch test . 5. However, this is not the case, and the patch test is neither sufficient nor necessary for convergence. 6. The patch test evokes a delayed, Type IV hypersensitivity reaction, which is a cell-mediated, antibody independent, immune response. 7. So far, she's sold the patch test to state prison systems for use on prisoners, probationers and parolees. 8. This is especially useful in individuals who have clinical symptoms ( contact dermatitis ) but a negative patch test . 9. The ready-to-use standardised patch tests are highly reliable and conserve the allergic agents in their best state of allergy. 10. In 2005 06, methyldibromoglutaronitrile / phenoxyethanol was the ninth-most-prevalent allergen in patch tests ] ] ( 5.8 % ).