Teichmann's crystal

Teichmann's crystal
Teich·mann's crystal 'tīk-mənz- n a crystal of hemin obtainable from hemoglobin that is used in a test for the detection of blood (as in a stain)
Teich·mann 'tīk-.män Ludwik Karol (1823-1895)
Polish anatomist. Teichmann attended medical school in Göttingen, Germany, and after graduation remained there as prosector of anatomy. In an 1853 paper on the crystallization of certain organic compounds of the blood, he described the preparation of microscopic crystals of hemin. The simple, specific test developed by Teichmann for the presence of blood in suspect stains on clothes and other items became widely used in forensic medicine.

Medical dictionary. 2011.

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  • teichmann's crystal — ˈtīḵmənz noun Usage: usually capitalized T Etymology: after L. K. Teichmann Stawiarski died 1895 German anatomist : one of the crystals of hemin obtainable from hemoglobin and useful as a test for blood : blood crystal …   Useful english dictionary

  • crystal — A solid of regular shape and, for a given compound, characteristic angles, formed when an element or compound solidifies slowly enough, as a result either of freezing from the liquid form or of precipitating out of solution, to allow the… …   Medical dictionary

  • Teichmann crystals test — Teich·mann crystals, test (tīkґmahn) [Ludwig Carl Teichmann Stawiarski, German histologist, 1823–1895] see under crystal and test …   Medical dictionary

  • Teichmann — Ludwig, German histologist, 1823–1895. See T. crystals, under crystal …   Medical dictionary

  • Teichmann test — (for blood) the suspected liquid is put under a coverglass with a crystal of sodium chloride and a little glacial acetic acid; heat carefully without boiling and then cool. If blood is present, rhombic crystals of hemin will appear …   Medical dictionary

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