Lymphocytes
Lymphocytes include T cells, B cells and natural killer cells, the part of the immune system that fights viruses and builds lasting immunity.
Your reading
This app uses 20–40%, or 1.0–4.0 thousand per microlitre. They often rise during and after viral infections like colds, flu or mono. Low counts can follow intense stress, poor sleep, steroids, heavy training blocks or some infections.
What may help
- —Repeating the test a few weeks after an illness
- —Prioritising sleep and recovery during hard training, both linked to healthy lymphocyte levels
When to talk to a doctor
If the count is persistently high or low on repeat tests, or comes with swollen lymph nodes, night sweats or weight loss.
Common questions
What is Lymphocytes?
Lymphocytes include T cells, B cells and natural killer cells, the part of the immune system that fights viruses and builds lasting immunity.
What is a normal Lymphocytes level?
Daygo uses 20–40% · 1.0–4.0 ×10³/µL as the reference range. This app uses 20–40%, or 1.0–4.0 thousand per microlitre. They often rise during and after viral infections like colds, flu or mono. Low counts can follow intense stress, poor sleep, steroids, heavy training blocks or some infections.
How can I improve my Lymphocytes?
Repeating the test a few weeks after an illness. Prioritising sleep and recovery during hard training, both linked to healthy lymphocyte levels.
When should I see a doctor about Lymphocytes?
If the count is persistently high or low on repeat tests, or comes with swollen lymph nodes, night sweats or weight loss.
Source: MedlinePlus (NIH): Complete Blood Count. Reference ranges are standard adult intervals — your own lab may report a different range for your age, sex, or method. This isn't medical advice; always go by the range on your actual results and talk to a clinician about anything that concerns you.