Here's what a CBC test measures:
* Red blood cells (RBCs): Indicates the oxygen-carrying capacity of your blood.
* White blood cells (WBCs): Measures the number of different types of white blood cells, which fight infections.
* Platelets: These help your blood clot.
* Hemoglobin: The protein in your red blood cells that carries oxygen.
* Hematocrit: The percentage of your blood that is made up of red blood cells.
Why Lavender?
The lavender-colored stopper on the tube contains ethylenediaminetetraacetic acid (EDTA), an anticoagulant. This prevents the blood from clotting, allowing for accurate cell counting.
Other Uses:
While the most common use is for CBC, lavender tubes can also be used for some other blood tests, such as:
* Peripheral blood smear: A microscopic examination of the blood cells.
* Reticulocyte count: Measures the number of immature red blood cells.
It's important to note that different labs may have specific protocols, so it's always best to consult with your healthcare provider or the laboratory for specific information about the tests they perform using lavender-top tubes.