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serum
Red blood cells, serum, plasma
serum
red tube
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.
Green top tube ( lithium or sodium heparin) for plasma CMP; or Red top/SST for CMP, serum
Red (Serum) Tube or a Gold (SST) Tube
Red and yellow
Sst tube plasma.. Red tube/with ad
serum,tiger tube
Serum/plasma is generally colorless or straw colored. The red pigment of blood is caused by the oxygenated haemoglobin in the red blood cells.
The tube tops can vary depending on supplier, but red top is normally with no anticoagulant so it is used for any tests requiring serum not plasma, so most virology and biochem tests. Not usually used for Haematology tests.