title: [Possibility of stabilizing urea in preparation of control specimens].
abstract: 9-Triphenylphosphoniomethylphenanthrene chloride (9-TC) is a highly effective antibacterial biochemical stabilizer of the urea, which, used in concentrations 0.6 to 2.45 mmoles/liter, stabilizes its content in the serum for 990 days. Control specimens are prepared as follows: 100 ml of human or animal blood serum is added to 900 ml of 1.82 mmole aqueous solution of 9-TC, mixed, 24 h stored at 4-8 degrees C, and centrifuged. The resultant centrifugate is used as reference specimen for controlling urea measurements by the diacetylmonoxime method.
authors.forename: G M
authors.initials: GM
authors.lastname: Iarmol'chuk
mesh_terms: D000818:Animals; D002498:Centrifugation; D002801:Cholinesterase Reactivators; D002863:Chromogenic Compounds; D003931:Diacetyl / Q000031:analogs & derivatives*; D005079:Excipients; D006801:Humans; D008954:Models, Biological; D012016:Reference Values; D013048:Specimen Handling; D013696:Temperature; D013997:Time Factors; D014508:Urea / Q000097:blood*
chemical_list: D002801:Cholinesterase Reactivators; D002863:Chromogenic Compounds; D005079:Excipients; C004717:diacetylmonoxime; D014508:Urea; D003931:Diacetyl
vernacular_title: Vozmozhnost' stabilizatsii mocheviny pri izgotovlenii kontrol'nykh materialov.