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  2. Ethylenediaminetetraacetic acid - Wikipedia

    en.wikipedia.org/wiki/Ethylenediaminetetraacetic...

    Ethylenediaminetetraacetic acid (EDTA), also called EDTA acid, is an aminopolycarboxylic acid with the formula [CH 2 N(CH 2 CO 2 H) 2] 2. This white, slightly water-soluble solid is widely used to bind to iron (Fe 2+ /Fe 3+) and calcium ions (Ca 2+), forming water-soluble complexes even at neutral pH. It is thus used to dissolve Fe- and Ca ...

  3. Template:Table of blood sampling tubes - Wikipedia

    en.wikipedia.org/wiki/Template:Table_of_blood...

    Two bottles are typically collected in one blood draw; one for aerobic organisms and one for anaerobic organisms. [2] Blue ("light blue") Sodium citrate (weak calcium chelator/anticoagulant) Coagulation tests such as prothrombin time (PT) and partial thromboplastin time (PTT) and thrombin time (TT). Tube must be filled to the proper line. Plain red

  4. Pseudothrombocytopenia - Wikipedia

    en.wikipedia.org/wiki/Pseudothrombocytopenia

    The prevalence of pseudothrombocytopenia in K2-EDTA reported in different studies ranges from 0.03 to 0.27 percent in outpatients, [3] which accounts for 15 to 30 percent of all cases of isolated thrombocytopenia. Tests can mistake small clumps of platelets for leukocytes, thus showing a pseudo­leukocytosis in blood counts. [4] Platelet ...

  5. Anticoagulant - Wikipedia

    en.wikipedia.org/wiki/Anticoagulant

    In addition, test tubes used for laboratory blood tests will have chemicals added to stop blood clotting. Besides heparin, most of these chemicals bind calcium ions, preventing the coagulation proteins from using them. Ethylenediaminetetraacetic acid (EDTA) strongly and irreversibly chelates (binds) calcium ions, preventing blood from clotting.

  6. Venipuncture - Wikipedia

    en.wikipedia.org/wiki/Venipuncture

    In general, tests requiring whole blood call for blood samples collected in test tubes containing some form of the anticoagulant EDTA. EDTA chelates calcium to prevent clotting. EDTA is preferred for hematology tests because it does minimum damage to cell morphology. Sodium citrate is the anticoagulant used in specimens collected for ...

  7. Echinocyte - Wikipedia

    en.wikipedia.org/wiki/Echinocyte

    Echinocytosis is a reversible condition of red blood cells that is often merely an artifact produced by EDTA, which is used as an anticoagulant in sampled blood. [3] Echinocytes can be distinguished from acanthocytes by the shape of the projections, which are smaller and more numerous than in acanthocytes and are evenly spaced.

  8. Blood plasma - Wikipedia

    en.wikipedia.org/wiki/Blood_plasma

    Blood plasma is a light amber ... EDTA binds zinc ions, which ... His notable contribution at this time was to transform the test tube methods of many blood ...

  9. Buffy coat - Wikipedia

    en.wikipedia.org/wiki/Buffy_coat

    Since the buffy coat is mostly composed of leukocytes, it is a useful in human medical research, especially in cases where blood is the only experimental sample. Peripheral blood mononuclear cells (PBMCs) can be extracted from the buffy coat, and can be frozen for storage, or used to conduct immunological exepriments.