Gastroccult is the only test designed specifically for gastric occult blood and pH testing. Gastroccult has a convenient pH comparison chart on the test card. The pH scale provides the entire clinically relevant range for monitoring antacid prophylaxis. With Gastroccult you can be confident. Gastroccult is the only accurate way to detect blood in gastric specimens or vomitus. Fecal occult blood tests do not provide reliable results when used with gastric specimens. Gastroccult can reliably verify low levels of blood in samples containing bile. No need to rely on a subjective visual inspection.