Clinical Trials

Volunteer Blood Donors

Inclusion Criteria:

• Adults > 18 years of age.
• Volunteer blood donor.
• Able to provide verbal consent to participate in the study.

Exclusion Criteria:

• Refusal to participate in the study.
• Inability to provide verbal consent.

General Surgery and Liver Transplant Surgery Participants

Inclusion Criteria:

•  > 18 years of age.
• Consenting adult (Patient who is unable to provide consent due to his/her medical condition (mainly intubated and ventilated patients), a consent will be obtained from the legally authorized representative).
• Scheduled for surgery requiring frequent scheduled blood draws as part of their routine care

Exclusion Criteria:

• Pregnant or lactating women (pregnancy test is part of routine preoperative clinical care).
• Skin abnormalities at the planed application sites that would interfere with transluminating the finger (such as burns, scar tissue, nail polish, infections etc.).

Policythemia Vera Participants

Inclusion Criteria:

• Consenting adult > 18 years of age.
• Patient with documented diagnosis of Policythemia Vera or hemochromatosis.
• Scheduled to undergo routine phlebotomy to remove excess hemoglobin.
• Able to provide verbal consent.

Exclusion Criteria:

• Inability to provide verbal consent.