> For the complete documentation index, see [llms.txt](https://docs.celly.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.celly.ai/supported-tests/blood-wbc-differential.md).

# Blood: CBC test

A **complete blood count** (**CBC**) is a laboratory test that indicates the counts of white blood cells, red blood cells, and platelets.

A **white blood cell differential** is a laboratory test that provides information about the types and amounts of white blood cells in the sample. The test measures the amounts of the five normal white blood cell types – **neutrophils, lymphocytes, monocytes, eosinophils**, and **basophils** – as well as **abnormal cells** if they are present.

![White blood cells](/files/-MJYTNfzH9_EltebLDcd)

Microscopist examines the smear in a systematic pattern, scanning from side to side within the **feathered edge** (single layer of cells at the end of the smear) and counting cells consecutively. Microscopist counts at least **100 white blood cells** using **100x or 40x objective lens magnification**.

![Scanning pattern](/files/-MJYRt6WbtZABr58Bbse)

Celly supports 2 types of CBC test - manual CBC and CBC with motorized stage.

After the test finish you can review results on Celly website. 

## Results review

* Log in on the [**website**](https://app.celly.ai). Go to the [**Tests**](https://app.celly.ai/app/analysis/) page. Push the **View** button to open your report.
* Go to the **Cells** tab. Drag the cells to the appropriate type to correct errors. Confirm the test using the **Approve** button.

{% hint style="success" %}
Use the **hotkeys** for the fast class correction: hover over the cell and press the hotkey button - the cell will immediately change the class
{% endhint %}

![Cells Page](/files/AUIl0hxpA9yZYATeN86a)

*  On the **Snapshots** page, you can review the photos. The application automatically captures 10 photos during the test. You can find here your manual snapshots too.

![Snapshots page](/files/-MbCx_fAyKBlGhNGlEnV)

* On the **Report** page, you can review and download the final PDF report with the following sections:
  * **WBC-differential**, reference ranges, and abnormality flags. 
  * **RBC distribution** by Size, Shape, Color, and Inclusions

![Report: WBC-diff](/files/-MbfSVWmdsVw_B0Kjwpe)

![Report: RBC distribution](/files/-MbfSK4qQBLl-YINGCdB)

{% hint style="info" %}
Celly can automatically store results in LIS, [see instruction](/config/lis-integration.md)
{% endhint %}

{% embed url="<https://youtu.be/B2AyEIteSQk>" %}
Full blood count video tutorial
{% endembed %}

{% embed url="<https://youtu.be/nbRUiWl2Qrs>" %}
Staining smears tutorial
{% endembed %}