Complete Blood Count (CBC)Reported in %Lymphocytes (percent)
The percentage of white cells that are lymphocytes, the cells of longer-term and viral immunity.
What it measures
Lymphocytes include B cells, T cells, and natural killer cells. They remember infections, make antibodies, and coordinate immune responses. The percent is their share of the differential. Children normally run a higher lymphocyte percent than adults, which is why age-specific intervals matter.
Why it is on the panel
Viral illness is the everyday reason this share moves. On a screening panel it also documents your baseline mix of white cells.
How to read it
Always pair the percent with the absolute lymphocyte count. A high percent and a normal absolute count usually means neutrophils fell. A high percent and a high absolute count means lymphocytes truly increased.
When it runs higher
Viral infections commonly raise the lymphocyte share. Some chronic infections and, less often, lymphocyte disorders do too. A mildly high percent during a cold is an ordinary finding.
When it runs lower
The share falls when neutrophils surge, and when lymphocytes themselves are reduced by steroids, stress, or some immune and viral conditions. HIV and some medicines are among the reasons an absolute lymphocyte count stays low.
How to use this page
This page explains what the measurement is for. It is educational. Your Healiam report includes the reference interval for your age and sex, and a clinician reads that result with your history, medicines, and the rest of the panel. Talk with a clinician before changing diet, supplements, or treatment because of a number on a report.
Lymphs
Lymphs is part of the full panel.
No referral or insurance required.
One preventive draw covers this measurement and the rest of the Healiam panel. CLIA-certified results come back in days.