Sponsor decided to terminate the entire project, and therefore there was no use for the samples collected in the study.

Development of a new diagnostic detection tool for gastrointestinal bleeding.

Literature does not support enough data/knowledge regarding stomach bleeding Hb levels in pathological situations and/or stomach bleeding levels following biopsy. It is important to understand the approximate concentration level of stomach bleeding before proceeding with technology development to insure this technology is capable of detecting such blood levels.

Inclusion Criteria:

• Male or female subjects ≥ 18 years old.
• Subject is scheduled for EGD endoscopy which includes biopsy, or,
• Subject is scheduled for EGD endoscopy following a bleeding event.

Exclusion Criteria:

• Subject is either not competent or not willing to provide written informed consent.

All gastric juice samples should contain blood. This will be determined by the treating physician based on visual assessment in a region alongside the fresh biopsy site just performed, and prior to any saline washing.