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red top
GOLD is incorrect. Digoxin is a heart drug. General chemistry drug tests use red top.
GOLD is incorrect. Digoxin is a heart drug. General chemistry drug tests use red top.
Green top perferred, otherwise red top no gel.
the red top tube has no additives, the gold/speckled top tube has a gel in it but the explain red top tube has nothing nothing nothing in it.
blue top
Red top, no gel.
For venous blood specimens, if it is test tubes used in blood collection that you are referring to, the gel is a serum separator. When the sample is centrifuged, the red cells will spin to the bottom, plasma to the top, gel separating the blood components.
Samole moves from top to bottom is called vertical gel system, for example a SDS PAGE gel.
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Liquid Flat-Top by Markham
Depends who you buy your red top tubes from, but mostly no. A serum seperator tube (SST) is usually yellow or gold top, it has a lump of clear gel in the bottom. When spun this gel ends up between the serum and red blood cellsmaking it easier to seperate the serum. A red top is generally a tube with nothing at all in it. So when spun you end up with serum and clotted red cells but nothing seperating them. Most other colour tubes contain an anti coagulant preventing the blood from clotting so when spun you end up with plasma and red cells. The important thing for most tests is the difference between serum and plasma, so a red top and an SST can generally be used for the same tests although SST is often prefered as its easier to work with.