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2. Vacutainer - Wikipedia

   en.wikipedia.org/wiki/Vacutainer

   A tiger top tube after centrifugation to separate blood cells from serum. Vacutainer tubes may contain additional substances that preserve blood for processing in a medical laboratory. Using the wrong tube may make the blood sample unusable for the intended purpose. These additives are typically thin film coatings applied using an ultrasonic ...

3. Test tube - Wikipedia

   en.wikipedia.org/wiki/Test_tube

   A test tube filled with water and upturned into a water-filled beaker is often used to capture gases, e.g. in electrolysis demonstrations. A test tube with a stopper is often used for temporary storage of chemical or biological samples. Samples of human blood collected for blood tests

4. 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]

5. Template:Table of blood sampling tubes - Wikipedia

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

   Tube cap color or type in order of draw Additive Usage and comments Blood culture bottle: Sodium polyanethol sulfonate (anticoagulant) and growth media for microorganisms: Usually drawn first for minimal risk of contamination. [1] Two bottles are typically collected in one blood draw; one for aerobic organisms and one for anaerobic organisms ...

6. 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 ...

7. Blood fractionation - Wikipedia

   en.wikipedia.org/wiki/Blood_fractionation

   erythrocytes (red blood cells) at the bottom of the centrifuge tube. Serum separation tubes (SSTs) are tubes used in phlebotomy containing a silicone gel; when centrifuged the silicone gel forms a layer on top of the buffy coat, allowing the blood serum to be removed more effectively for testing and related purposes.