For the most part, hematology studies are done on lavender tube samples. These include hemoglobin and hematocrit, CBC, Rh and type, etc.
You can substitute a pink tube (potassium EDTA) for a lavender tube in most cases. It is important to note that certain tests may require a lavender tube specifically, so always check with your lab or healthcare provider for guidance.
The recommended color tube for drawing an A1C blood test is lavender.
A lavender-top tube is typically used for iron panel tests.
Lavender CBC is complet blood count
The tube for fasting blood sugar tests is typically a lavender or purple-colored tube.
A green tube is typically used for ammonia tests. It contains heparin as an anticoagulant.
If an orange shield tube is collected before a lavender shield tube, there may be a risk of contamination or interference in the lavender tube's sample. The orange tube typically contains a serum separator gel and may affect the plasma or whole blood samples collected in the lavender tube, which is intended for tests that require EDTA as an anticoagulant. It's best practice to follow the correct order of draw to prevent such issues.
The color of the top tube for an HGB A1C test is typically lavender. Lavender top tubes are used to collect whole blood samples for hematology tests, including HGB A1C testing.
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For iron panel tests, the test tube typically used is a lavender or purple-topped tube. These tubes contain an anticoagulant and are used for collecting whole blood samples for hematology tests including iron panels.
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.
Blue test tubes are typically used for blood coagulation (BC) tests.