Refer to the Test Table for specific instructions and sample requirements. Stopper Type: HemogardTM Gold top/Conventional Red-Gray Marble. Tube.
Some tests require the use of serum, some require plasma, and other tests require Red or gold (mottled or "tiger" top used with some tubes is not shown).
Chemistry testing is usually performed on serum or plasma samples. Blood tube: Striped red top; Contents: These tubes contain a gel, which facilitates.