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Table 2 Vehicles and Concentrations Suggested by the ESCD[6] for Patch Testing with Specific Drugs

From: Patch Testing in Non-Immediate Drug Eruptions

Drug

Vehicle

Concentration (%)

Acyclovir

Pet/Aq

1-10

β-Lactams

Pet

5-10

Carbamazepine

Pet

1-10

Celecoxib

Pet

5-10

Corticosteroids

Aq/Al

Up to 30

Ganciclovir

Aq

20

Steroid hormones

Pet/Aq/Al

Up to 30

  1. Al = alcohol; Aq = water; ESCD = European Society of Contact Dermatitis; Pet = petrolatum.