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2. Vacutainer - Wikipedia

   en.wikipedia.org/wiki/Vacutainer

   Vacutainer. A vacutainer blood collection tube is a sterile glass or plastic test tube with a colored rubber stopper creating a vacuum seal inside of the tube, facilitating the drawing of a predetermined volume of liquid. Vacutainer tubes may contain additives designed to stabilize and preserve the specimen prior to analytical testing.

3. Serum-separating tube - Wikipedia

   en.wikipedia.org/wiki/Serum-separating_tube

   The gel in SST II tubes (which appears slightly less opaque) is supposed [weasel words] to have less effect on drug levels in serum. [citation needed] Blood samples should be allowed time to form a clot at room temperature for 30–60 min. [6]

4. Test tube - Wikipedia

   en.wikipedia.org/wiki/Test_tube

   These tubes are commonly sealed with a rubber stopper and often have a specific additive placed in the tube with the stopper color indicating the additive. For example, a blue-top tube is a 5 ml test tube containing sodium citrate as an anticoagulant, used to collect blood for coagulation and glucose-6-phosphate dehydrogenase testing. [5]

5. Venipuncture - Wikipedia

   en.wikipedia.org/wiki/Venipuncture

   The test tubes in which blood is collected may contain one or more of several additives. 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 ...

6. Blood test - Wikipedia

   en.wikipedia.org/wiki/Blood_test

   Blood test. Modern hospital hematology laboratory. A blood test is a LABORATORY analysis performed on a blood sample that is usually extracted from a vein in the arm using a hypodermic needle, or via fingerprick. Multiple tests for specific blood components, such as a glucose test or a cholesterol test, are often grouped together into one test ...

7. Phlebotomy - Wikipedia

   en.wikipedia.org/wiki/Phlebotomy

   Phlebotomy is the process of making a puncture in a vein, usually in the arm, with a cannula for the purpose of drawing blood. [1] The procedure itself is known as a venipuncture, which is also used for intravenous therapy. A person who performs a phlebotomy is called a phlebotomist, although most doctors, nurses, and other technicians can also ...