What happens if I modify the PDT HealthCert issued by the medical facility? 11 March 2022 09:19 Updated A modified PDT HealthCert will show up as having been tampered with. Related articles How will I receive my PDT HealthCert? Do I need to submit my PDT HealthCert via the Notαrise portal? What do I do after receiving my PDT HealthCert from the medical facility? I do not have a Singpass account. Can I still have my PDT HealthCert digitally authenticated and endorsed? Can the PDT HealthCert be printed and brought along for travel?