CIGA Healthcare Ltd. CIGA Healthcare Ltd. is an award-winning company that specialises in the development of Rapid Diagnostic Tests for home and professional use. New products from their innovative R&D programme will help change the face of diagnostics and improve healthcare in all corners of the world. In the UK the company supplies several major supermarkets, pharmacies and the NHS and the HSE in Ireland. CIGA distributes Suresign ® products to over 70 countries and through their subsidiary in USA now has several major US customers.