complete blood count
ammonia
esr (sed rates)
hemoglobin a1c
EBV (Epstein-Barr virus) is typically collected in a lavender or purple top tube for hematologic testing.
No, the liquid portion of a specimen collected in a tube containing EDTA is plasma. Serum is the liquid portion of a blood sample collected in a tube without anticoagulant. EDTA is an anticoagulant that prevents blood clotting by chelating calcium ions.
The three tubes that contain plasma are the red-top tube, green-top tube, and lavender-top tube. Plasma is the liquid component of blood that does not contain cells and is obtained by spinning down a blood sample in the presence of an anticoagulant.
A royal blue or navy blue tube with no anticoagulant is typically used for lead testing.
Using the same lavender tube for multiple tests is generally acceptable as long as the order of draw is followed to prevent cross-contamination between additives in different tubes. However, it is recommended to consult with your laboratory or follow specific lab protocols to ensure accurate test results.
A lavender-top tube should be collected for a complete blood count (CBC).
The BCX (basic metabolic panel) is typically collected in a green or lavender top tube. The C and S (culture and sensitivity) test is collected in a blood culture bottle, not a specific color tube.
A CBC (Complete Blood Count) is typically collected in a lavender-top tube that contains the anticoagulant EDTA (ethylenediaminetetraacetic acid). This additive helps preserve the blood sample for testing.
If a grey stopper tube is collected before a lavender shield tube, contamination from the additives in the grey stopper tube may lead to inaccurate results in the lavender shield tube, especially for analytes sensitive to contamination or carryover effects. It is important to follow the recommended order of draw during blood collection to prevent such issues.
Clotting
If a lavender tube is collected before a light green tube, it should not affect the quality of the samples. However, the order of draw is important to prevent contamination, so it's best to follow the recommended order for blood tube collection to ensure accurate test results.
When venipuncture is performed using a lavender vacutainer tube, the sample collected is typically used for hematology testing, such as complete blood count (CBC), erythrocyte sedimentation rate (ESR), and blood typing. The lavender top tube contains EDTA as an anticoagulant to preserve the blood sample for these types of tests.
The blood specimen for a CRP test is usually collected in a lavender-top or clear tube with an EDTA anticoagulant. This tube is also sometimes referred to as a "purple-top" tube.
If a lavender tube is collected before a light green tube, there is a risk of contamination and carryover of additives present in the lavender tube into the sample collected in the light green tube. This can affect the accuracy of test results and potentially lead to erroneous findings. It is important to follow the correct order of draw to ensure the integrity of the samples.
Lavender top plastic tube
The lavender shield tube collects positive ions, while the light green shield tube collects negative ions. If the lavender shield tube is collected before the light green shield tube, it means that more positive ions were present in the environment than negative ions at that moment.
A lytes panel typically requires a green or lavender top tube as it needs to be collected in a tube with an anticoagulant. This is to prevent the blood from clotting and altering the electrolyte concentrations being measured in the sample.