White Blood Cell Differential with Quantitative Microbial Count (if applicable)

What Does the Test Measure?

The test evaluates five main types of white blood cells (neutrophils, lymphocytes, monocytes, eosinophils, and basophils) by examining their proportions in your blood. If the slug includes 'micro,' it may also assess microbial indicators (e.g., bacterial or fungal load) using advanced methods like culture or molecular testing.

Why Might You Need This Test?

Your doctor may order this test to identify infections (such as bacterial or fungal), evaluate immune system function, check for blood disorders (like leukemia or anemia), or monitor conditions like chronic inflammation.

How Is the Test Performed?

A small blood sample is drawn from a vein, typically in your arm. The sample is processed to count and identify white blood cell types. If microbial screening is included, additional testing (e.g., culture or PCR) may be done on the sample to detect pathogens.

What Are Common Results and Next Steps?

Abnormal proportions of white blood cells can signal infections, allergies, or immune issues. Elevated or low counts may prompt further testing, such as blood cultures or additional immune function tests. Microbial results may indicate infection requiring antibiotics or antifungal treatment.