Table of Contents
What tests are lavender tubes used for?
Lavender-top tube (EDTA) This tube contains EDTA as an anticoagulant – used for most hematological procedures. These tubes are preferred for molecular tests.
What blood test are performed using a lavender tube?
In general, hematology testing is performed on EDTA- (purple top tube) anticoagulated blood.
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 color vacuum tube should be drawn for troponin?
Green top (lithium-heparin) tube. Lithium heparin plasma tubes containing separating gel can be used.
What color tube is used for electrolyte testing?
Specimen Requirements Red-top tube or green-top (heparin) tube is acceptable if centrifuged within 45 minutes and the serum or plasma is removed and placed in a tightly-stoppered secondary tube.
What is the difference between K2 and K3 EDTA tubes?
The main difference between K2 EDTA and K3 EDTA is that K2 EDTA contains two chelated potassium ions whereas K3 EDTA contains three chelated potassium ions. K2 EDTA and K3 EDTA are two types of anticoagulants used in routine hematological tests.
Is a lavender tube plasma or serum?
Also, the gel barrier may not be intact and could cause improper separation of serum and cells, possibly affecting test results. Lavender-top tube: Contains K2 EDTA. Use: EDTA whole blood or plasma. Send plasma in a plastic transport tube labeled “Plasma, EDTA.” Send whole blood in a lavender-top tube.
Does the lavender tube produce plasma or serum?
tubes. acid, commonly called EDTA. It keeps the blood from clotting, so a spun lavender will give off plasma.
What order should blood tubes be drawn?
The order of draw is based on CLSI Procedures and Devices for the Collection of Capillary Blood Specimens; Approved Standard – Sixth Edition, September 2008. This standard recommends that EDTA tubes be drawn first to ensure good quality specimen, followed by other additive tubes and finally, serum specimen tubes.
Which color tube should be drawn first?
NOTE: All tubes sterile. Standard order of draw: BLOOD CULTURES, royal blue, red, light blue, SST (Gold), green, tan, yellow, pink, pearl, lavender. If a coag tube (light blue) is the only tube or the first tube to be drawn, a 5 mL discard tube must be drawn first.
How many tests can be done in a lavender tube?
ALL OF THIS PAGE CAN SHARE A TUBE UP TO ABOUT 12 TESTS.
Do you centrifuge purple top tubes?
It is recommended that these tubes are centrifuged after the clot forms and the serum transferred to a separate container. This new container should be labeled with owner name, animal ID, and as serum.
What color tube do you use for a CBC and CMP?
Plasma is preferred specimen type. Green Tube/Plasma: Centrifuge after collection. Gold Tube/Serum: Allow blood to clot for 30 minutes in a vertical position and centrifuge within 2 hours.
Which tube does not need to be inverted?
All tubes (except red top tubes which contain no additives) must be gently inverted 5 to 8 times immediately after filling, to ensure proper mixing of blood and anticoagulant, or other additives.
What are the different color tubes for lab tests?
Blood Collection Tubes Tube cap color Additive Common laboratory tests Lavender or pink Potassium EDTA Hematology and blood bank Gray Sodium fluoride, and sodium or potassium oxalate Glucose (especially when testing will be delayed), blood alcohol, lactic acid.
Which tube is used for PTT?
Blood should be collected in a blue-top tube containing 3.2% buffered sodium citrate. Evacuated collection tubes must be filled to completion to ensure a proper blood-to-anticoagulant ratio.
What is another name for electrolyte panel?
An electrolyte panel, also known as a serum electrolyte test, is a blood test that measures levels of the body’s main electrolytes: Sodium, which helps control the amount of fluid in the body.
Are pink and lavender tubes the same?
What are the differences between the lavender stopper and the pink stopper BD Vacutainer K2EDTA Tubes? A. The differences are the types of closures and the labeling. The lavender stopper can either be rubber or a Hemogard™ closure on a plastic tube.
Which is better K2 or K3 EDTA?
Dipotassium EDTA and tripotassium EDTA; that is the only difference. However, when you refer to PCR, I believe that you are talking about the low concentration present in the enzyme (0.1mM). At such minuscule concentrations, K2 and K3 have no significant difference.
What is K2 EDTA used for?
K2EDTA may be used for routine immunohematology testing, and blood donor screening. *** Tube inversions ensure mixing of anticoagulant (EDTA) with blood to prevent clotting.
How much blood is in a lavender tube?
Minimum Blood Collection Requirements for Selected Tests LAB TEST COLLECTION DEVICE AMOUNT ** (CC) WHOLE BLOOD Lead Lavender cap 0.5 microtainer 1.0 standard tube Magnesium Light green cap with gel or Gold cap with gel 0.6 Osmolality, Plasma Light green cap with gel 0.7 Osmolality, Serum Gold cap with gel 0.7.
What happens if you underfill a tube with blood?
If tubes are underfilled, the blood:anticoagulant ratio may result in hemolysis. Avoid underfilling tubes by having an ample supply of tubes of various capacities.
How many times do you invert a lavender tube?
Lavender top tubes must be adequately filled to ensure the correct blood to anticoagulant ratio. Gently invert the tube 8 to 10 times immediately after collection to ensure proper mixing with the anticoagulant.
What color tube is used for glucose testing?
Red-top tube, gel-barrier tube, or green-top (lithium heparin) tube. Do not use oxalate, EDTA, or citrate plasma.
How do you collect blood from EDTA tube?
—Collection Procedure: Draw blood into a tube containing the appropriate anticoagulant. If using a syringe, transfer the blood immediately to a tube containing anticoagulant. A citrate tube must be completely filled. Gently invert the tube 10 times to adequately mix the anticoagulant and blood.
Why is order of draw important in phlebotomy?
Blood samples must be drawn by phlebotomists in a specific order to avoid cross-contamination of the sample by additives found in different collection tubes. Phlebotomy order of draw is the same for specimens collected by syringe, tube holder, or into tubes preevacuated at the time of collection.
Does order of draw matter?
In the era of lyophilized anticoagulants, order of draw is no longer important. Contamination of serum samples with K EDTA will occur routinely if order of draw is not followed. Modern lab equipment can tell the difference between K from the EDTA tube and K from the patient, so order of draw is no longer important.
