What tests are red top tubes used for?

Red top – Tube without gel separator, used mainly for serology and chemistry testing. 10mL Red top tubes are used in Blood Bank for antibody screens. c. SST / Gold top – Tube contains a clot activator / gel separator which separates the cells from the serum for a variety of testing.

What is a red top blood tube?

Red-top tube: Contains no anticoagulant or preservative. Use: Serum or clotted whole blood. Mottled red/gray-top, gold-top, or cherry red-top (gel-barrier) tube: Contains clot activator and gel for separating serum from cells, but not anticoagulant.

What additive is in a red top tube?

clot activator
Blood Collection Tubes

Tube cap color Additive
Red or gold (mottled or “tiger” top used with some tubes) Serum tube with or without clot activator or gel
Green Sodium or lithium heparin with or without gel
Lavender or pink Potassium EDTA
Gray Sodium fluoride, and sodium or potassium oxalate

What are the tube colors for phlebotomy?


Light Blue 3.2% Sodium Citrate 4.5 mL
Gold Top (Serum Separator, “SST”) Contains separating gel and clot activator 6.0 mL
Light Blue – Yellow Label on Tube Thrombin 2.0 mL
Green Sodium heparin(100 USP Units) 5.0 mL

What is the purple top tube used for?

The purple top tube provides blood for infectious disease tests and ascertaining important data such as ABO/Rh (blood type), as well as whether the blood is positive or negative for cytomegalovirus (CMV), HIV, hepatitis, and West Nile virus, to name a few.

What do the different colored blood tubes mean?

Red: Contain NO anticoagulants, used for serum testing. Serum is fluid that is left behind after the cells are removed due to clotting. Gold: Contains a clot activator and special gel to separate serum from the cells. Purple: Contains a clot blocker and are used for complete blood count(CBC).

What is a lavender top tube used for?

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.

What color tube is used for DNA testing?

Preferred Samples. CONTAINER: Purple top (EDTA) tube (preferred). Yellow top (citric acetate) or grey top (potassium oxalate/sodium fluoride) tube also accepted.

What is the purple blood tube for?

How long is a lavender tube good for?

Specimen stability: DIFF: Refrigerated: 72 hours. Room temperature: 24 hours.

What do the colors on blood collection tubes mean?

Common blood collection tubes, their additives and laboratory uses Red. The red bottle is less common – it is used for biochemistry tests requiring serum which might be adversely affected by the separator gel used in the yellow Yellow. What additive does: Prevents the blood from clotting and stabilizes bacterial growth. Light Blue. Green. Lavender. Grey. Royal Blue Black.

What do different colors for tubes of blood mean?

The order of draw is as follows: Yellow: Blood cultures – this preserves microorganisms within the blood. Light Blue: Light blue tubes are also called coagulation tubes. Plain Red: The most common color for venipuncture. Plastic Red: This is a clot activator, separating the serum of the blood and causing actual blood clots to occur.

What are blue top blood tubes?

Light blue top tube contains citrate as an additive, which is a reversible anticoagulant. This additive will dilute the blood and is used for platelet function and coagulation assays. Green top tubes contain sodium or lithium heparin and used in chemistry for plasma determination.

What color of tube top for QuantiFERON TB?

Before drawing the patient, confirm you are using the 4 QuantiFERON tubes: Grey Top Tube (NIL) Green Top Tube (TB1 ANTIGEN) Yellow Top Tube (TB2 ANTIGEN) Purple Top Tube (MITOGEN)