Typically a marble-top tube is used for syphilis testing. Contact your lab for information specific to the test you're requesting.
A red top tube is typically used for a rapid plasma reagin (RPR) test, which is a screening test for syphilis. The red top tube contains no anticoagulant and allows for blood to clot before the serum is separated for testing.
blue top
The color of the top tube typically used for human chorionic gonadotropin (hCG) testing is red or red-gray.
The color of tube used for ferritin is typically gold or red/gray.
The color top tube used to collect whole blood with an additive is typically a lavender or purple top tube. This type of tube is commonly used for collecting blood samples for hematology testing.
For a HgA1c you would need a lavender top tube.
A red-top tube is commonly used for albumin testing.
Tiger top
lavender top
red top
The color of the top tube used for DNA testing is typically purple. This color indicates that the tube contains an anticoagulant called EDTA to preserve the DNA within the sample.
A lavender top tube is used for collecting whole blood specimens for analysis in hematology. The color of the tube top is a standardization for identifying the type of additive present in the tube for proper sample processing.