Red Blood Cell Morphology Examination (Peripheral Blood Smear Analysis)

Why Is This Test Done?

Your healthcare provider may order this test to investigate symptoms such as fatigue, pale skin, unusual bruising, or unexplained infections. It’s also used to monitor conditions like anemia, sickle cell disease, or other blood disorders. Sometimes, it’s performed as part of a general health check or to evaluate treatment effectiveness.

What to Expect Before the Test

No special preparation is needed. A simple blood draw from your arm is all that’s required. The sample is then spread thinly on a microscope slide for detailed examination. The process usually takes a few minutes.

What Happens During the Test?

After your blood is drawn, it’s placed on a glass slide and spread into a thin layer. A healthcare professional or lab technician examines the slide under a microscope to observe RBC characteristics, such as shape, color, and presence of any abnormal cells.

What Are Common Findings?

Normal RBCs are typically round and uniform in size and shape. Abnormal findings might include microcytes (smaller than normal), macrocytes (larger than normal), poikilocytes (irregularly shaped), or spherocytes (small, round cells without a central pallor). These can signal underlying health issues.