red
A red-top or serum separator tube is commonly used for collecting blood for tegretol level testing. It is important to follow specific instructions provided by the laboratory where the test will be performed.
serum,tiger tube
I would use the semi-colored tube.
green
a lavender top tube
red
blue
Light blue
tiger top
gray
SST
The recommended color tube for rubella serology testing is a red or tiger-top tube with gel separator. This allows for serum separation, which is needed for the test.