Clinical tube types

Additional information on specimen collection and transport may be found in the Pathology Laboratories' Test Directory.

Blue top tube


Blue top tube - Sodium Citrate (NaCitrate)
This tube is primarily used for coagulation studies (PT and PTT). Complete filing of this tube is essential to obtain accurate results.
 


Lavender top tube


Lavender top tube - EDTA
EDTA is the anticoagulant used for most hematology procedures. Its primary use is for the CBC and individual components of the CBC. The larger 6 mL tube is used for blood bank procedures.


Red top tube


Red top tube
This tube has no anticoagulant and is used for many chemistry tests, drug levels, and blood bank procedures.
 


Navy blue top tube


Navy blue top tube
There are two general types - one with K2 EDTA and one with no anticoagulant. This tube is used primarily for trace metal analysis.

Serum Separator Tube (SST)


Serum Separator Tube (SST®)
This tube contains a clot activator and serum gel separator. It has no anticoagulant and is used for many chemistry tests. It cannot be used for certain drug levels or any blood bank procedures.


Green top tube


Green top tube
Sodium Herparin or Lithium Heparin

 


Grey top tube


Grey top tube
Potassium Oxalate. This tube is used primarily for glucose tolerance testing.
 


Yellow top tube


Yellow top tube
ACD (Sol. A or Sol. B)

Last updated: Sunday, 13 December 2020