Collection tubes apparatus, systems, and methods

C - Chemistry – Metallurgy – 12 – M

Patent

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C12M 1/24 (2006.01) A61B 5/15 (2006.01) G01N 33/49 (2006.01)

Patent

CA 2743830

Methods of producing collection tubes are presented. The methods include providing a separator substance that can rapidly polymerize in a short time to a desired hardness and disposing the separator substance within the lumen of the tube. The separator substance is formulated to have a density between an average density of a serum fraction of whole blood and a cell-containing fraction of whole blood, and to be flowable with whole blood. Upon centrifugation of a tube having blood, the separator substance forms a barrier between the whole blood fractions. The tube and barrier maintain stability of one or more analyte levels, including potassium and glucose, within 10% of their initial values before centrifugation for at least four days.

L'invention concerne des procédés de production de tubes de collecte. Les procédés comprennent l'étape qui consiste à prévoir une substance de séparation qui peut polymériser rapidement en un temps réduit jusqu'à une dureté souhaitée et l'étape qui consiste à placer la substance de séparation dans la lumière du tube. La substance de séparation est formulée de manière à présenter une densité comprise entre la densité moyenne d'une fraction sérum du sang entier et celle d'une fraction contenant des cellules du sang entier et à pouvoir s'écouler avec le sang entier. Lors d'une centrifugation d'un tube rempli de sang, la substance de séparation forme une barrière entre les fractions du sang entier. Le tube et la barrière maintiennent pendant au moins quatre jours la stabilité d'un ou plusieurs niveaux d'analyte, notamment le potassium et le glucose, dans une plage de 10 % de leurs valeurs initiales avant centrifugation.

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