6. Obtaining a CTAS Number
The NHS Test and Trace service uses a web-based tool called the Contact Tracing and Advice Service (CTAS) to record information about people who have tested positive for COVID-19 and their contacts.
The CTAS Account ID is an 8-character identifier unique to each record on the web tool (e.g. 4a2c204a).
Most citizens who test positive for Covid-19 or are a contact of someone who has had a positive test will receive a digital invitation from the CTAS web tool to undertake the contact tracing journey. The invitation message (sent either via a text message or email) contains the 8-character Account ID.
All cases and contacts who completed the contact tracing journey (including those who were ineligible for the digital invitation such as children or individuals with a landline number only) will receive a citizen advice message upon completion of the NHS Test and Trace questionnaire. The citizen message (sent either via a text message/email or postal service for people with no access to mobile phone or email) contains the 8-character Account ID.
LiNK can, through specified officers, use the web-based PowerBI based Eligibility Checker to check whether an applicant has a CTAS number.