Uploaded August 2023 | Updated September 2026, 1 day ago
The Kastle–Meyer test is a presumptive blood test, in which the chemical indicator phenolphthalein is used to detect the possible presence of hemoglobin. The test was named after the American agricultural chemist, Joseph Hoeing Kastle, who in 1901, invented and tested the crude blood test, and the German physician and chemist, Erich Meyer, who modified the test in 1903.
The Kastle–Meyer test is a presumptive blood test, in which the chemical indicator phenolphthalein is used to detect the possible presence of hemoglobin. The test was named after the American agricultural chemist, Joseph Hoeing Kastle, who in 1901, invented and tested the crude blood test, and the German physician and chemist, Erich Meyer, who modified the test in 1903.
