The investigators are recruiting healthy volunteers to donate a finger prick blood sample or a small venous sample to Entia for the further development and testing of our blood analyser. The venous samples are taken by a registered nurse hired via a third party company. The results of the blood tests are not informed to the participants unless they explicitly ask for it.

Inclusion Criteria:

• aged 18 years and above
• healthy with no known conditions

Exclusion Criteria:

• Has a known health condition, including blood-borne diseases
• Inadequate understanding of the English language (written and verbal) that would require a translator

Healthy volunteers, enrolled by invitation only