Blood: WBC differential

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

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 100 white blood cells using 100x objective lens magnification.

Scanning pattern

WBC-diff, using Celly.AI


Put the sample, turn on the light, use 100x objective lens magnification, and set the lens focus. Move the field of view to the single layer of cells.

The procedure requires 100× oil-immersion objective lens

Test execution

Tap the test configuration button: set "Blood: WBC differential" test type, choose a patient.

Tap the app settings button. Set the cell number to analyze (100 by default). Start the test.

Move your slide, controlling the focus. The App will detect and count white blood cells. After reaching the specified number of cells, the application will complete the test.

Celly.AI automatically detects and counts white blood cells

If a cell was not detected, press it with your finger and hold for a few seconds

Result review and confirmation

  • Log in on the website. Go to the Tests page. Push the View button to open your report.

  • Go to the Cells tab to check the pre-classification. Drag the cells to the appropriate type to correct errors.

Move the artifacts and blurred cells to Unclassified type - this type is not involved in the WBC ratio calculation

  • Confirm the test using the Approve button. On the report page, you can download the final PDF report.

If your integration with LIS is enabled you can get the reports directly to your LIS

Video Tutorial - WBC differential with Celly.AI