The GRADE Capillary Blood Collection Pilot Study

The Glycemia Reduction Approaches in Diabetes: A Comparative Effectiveness Study (GRADE Study) Capillary Blood Collection: A Pilot Study

This pilot study is planned to validate the comparability of HbA1c results obtained from whole blood collection via venous phlebotomy versus a capillary collection of whole blood. The participant will self-collect capillary blood into HbA1c prep vials containing a buffer; these prep vials will be sent to the CBL at ambient temperature via US Postal System (USPS) mail. The feasibility of self-collection of these capillary samples by GRADE participants will also be evaluated.

Inclusion Criteria:

• Current GRADE participant with a scheduled follow-up visit

Exclusion Criteria:

• GRADE participants attending first quarterly (Month 3) visit or an annual visit