Flow Cytometry and Antibodies

The laboratory chooses antibodies that recognise particular proteins. Each is paired with a fluorescent tag and mixed with prepared cells. When cells pass through a laser, the instrument detects fluorescent signals. A combination of markers creates a profile rather than relying on one signal. This can help distinguish cell groups that look similar under a microscope, including different white blood cell populations. Marker results are interpreted as part of the full clinical picture, not as a diagnosis in isolation.

Ask whether the antibody panel is designed for screening, classification, treatment monitoring, or another purpose. Tell the team about recent treatment when requested. A report may describe detected or absent markers, intensity, and patterns across cells. Read it with the clinician who ordered it; unfamiliar marker names do not indicate a diagnosis without explanation. Learn more through [Flow Cytometry](/technology/flow-cytometry/).

Report persistent bleeding, spreading redness, marked swelling, fever, or pain that is getting worse after collection. If the sample followed a bone marrow procedure, follow the dressing and activity advice you were given. Get emergency help for collapse, severe weakness, chest pressure, or difficulty breathing.

Which markers are being tested, and what question is the panel intended to answer? Ask whether the result needs correlation with a smear, biopsy, imaging, or another laboratory method. You can also ask how an antibody result might change the next step and whether a [Bone Marrow Biopsy](/treatments/diagnostics-and-staging/bone-marrow-biopsy/) is relevant.