UK's MHRA approves GSL switch for allergy test

1 August 2019 - Deborah Wilkes

The UK's Medicines and Healthcare products Regulatory Agency (MHRA) has given the go-ahead for a skin patch that screens for allergies to paraphenylenediamine (PPD) – a common component of hair colourants – to be switched from a prescription-only medicine to general-sale list (GSL) status.