|i. Identified||Labelled with personal identifiers such as Name or National Insurance Number.
||Clinical genetic tests for disease.|
|ii. Coded||Labelled with a clinical trial subject number that can be traced or linked back to the subject by the investigator. Samples do not carry any personal identifiers.
||Research into specific diseases and responses to medicines.
|iii. De-identified||Labelled with a unique second number. There is a link between the first and second number. The second number is unknown to investigators and patients. Samples do not carry any personal identifiers.
||Research into specific diseases and responses to medicines when it may be necessary to return results or go back to coded samples for re-testing.
|iv. Anonymised||Labelled with a unique second number. The link between the clinical study number and the unique second number is deleted. Samples do not carry any personal identifiers.
||Research into non-specific diseases, responses to a range of medicines.
|v. Anonymous||No personal identifiers. Identification of the subject is unknown. Anonymous samples may have population information (eg the samples come from patients with diabetes, but no additional individual clinical data).
||Source of DNA material for sequencing and identifying DNA markers. General research into the disease area (eg Differential gene expression studies).