Apparatus and method for separating components

1. An apparatus for separating components, the apparatus comprising:

a main chamber which contains a sample that is separated into a plurality of layers by a centrifugal force, a specific layer among the plurality of layers including specific components;

a component separating chamber connected to the main chamber so as to receive the specific layer;

at least one kind of stain reagent received in at least one of the main chamber and the component separating chamber to dye at least one kind of component out of the specific components;

a first channel which connects the component separating chamber to the main chamber; and

a first channel valve which is disposed in the first channel to control a liquid flowing through the first channel.

2. A method of measuring a white blood cell differential count using an apparatus for separating components, the method comprising:

injecting a blood sample into a main chamber of the apparatus;

separating the sample into a plurality of layers by a centrifugal force;

dyeing at least one kind of white blood cells (WBCs) contained in a specific layer out of the plurality of layers with at least one kind of stain reagent; and

counting the number of the dyed WBCs by optically detecting at least one dyed kind of WBCs.

3. The method of claim 2 , wherein at least one kind of stain reagent is injected into the main chamber together with the sample.

4. The method of claim 2 , further comprising opening a first channel valve disposed in a first channel connecting the main chamber to a component separating chamber of the apparatus and extracting and discharging the specific layer including the white blood cells among the plurality of layers to the component separating chamber.

5. The method of claim 4 , wherein at least one kind of stain reagent is applied to the inside of at least one of the main chamber and the component separating chamber.

6. The method of claim 2 , further comprising injecting a reagent, which reacts with the sample and helps the sample to be separated into the plurality of layers, into the main chamber.

7. The method of claim 4 , wherein the method further comprises opening a second channel valve of a second channel which connects a waste chamber to a portion of the main chamber to which the component separating chamber is not connected and discharging a layer not including the white blood cells among the plurality of layers to the waste chamber after the separating of the sample into the plurality of layers.

8. The method of claim 5 , wherein the discharging of the layer not containing the white blood cells to the waste chamber comprises applying a centrifugal force to the plurality of layers and pumping the layer not containing the white blood cells from the main chamber into the waste chamber.

9. The method of claim 8 , wherein the discharging of the layer not containing the white blood cells to the waste chamber precedes the extracting and discharging of the specific layer including the white blood cells.