Absolute Lymphocyte Count

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What your result means

Critically Low

Your immune memory cells are very low — serious immune compromise

Lymphocytes are the immune cells responsible for fighting viruses and producing antibodies. At this very low level, your adaptive immune system is very compromised — viral infections and even reactivation of latent viruses like herpes become serious threats.

What to do:

This requires urgent medical evaluation. Causes include HIV, certain medications, and immunodeficiency conditions. Seek care today.

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Lymphocytes: {{value}} {{unit}} — very low (ref: {{low}}–{{high}})

Low

Your virus-fighting immune cells are running low

A low lymphocyte count (lymphopenia) reduces your ability to fight viruses and mount long-term immune responses. Common may contribute to include recent viral illness, stress, malnutrition, and certain medications like steroids.

What to do:

Your doctor should investigate if this persists or if you have frequent infections. Stress reduction, good sleep, and nutrition support lymphocyte recovery.

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Lymphocytes: {{value}} {{unit}} — below reference range (ref: {{low}}–{{high}})

Borderline Low

Your lymphocytes are a little low — often temporary after illness

A borderline low lymphocyte count is common after viral infections and periods of significant physical or psychological stress. It usually recovers on its own.

What to do:

Monitor with a repeat test in 4–6 weeks. Focus on good sleep and stress management to support immune recovery.

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Lymphocytes: {{value}} {{unit}} — borderline low

Normal

Your lymphocyte count is healthy

Your lymphocyte count is normal, indicating your adaptive immune system has adequate virus-fighting and antibody-producing resources.

What to do:

No action needed. Good sleep, regular exercise, and a nutrient-dense diet all support lymphocyte health.

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Lymphocytes: {{value}} {{unit}} — within reference range

Optimal

Your immune memory cells are in great shape

Your lymphocyte count is in the ideal range, suggesting a well-functioning adaptive immune system ready to respond to viral threats and remember past infections.

What to do:

Excellent result. Keep supporting your immune health with consistent sleep, nutrition, and stress management.

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Lymphocytes: {{value}} {{unit}} — optimal

Borderline High

Your lymphocytes are slightly elevated — often a sign of viral activity

A mildly elevated lymphocyte count often occurs during or after a viral infection, when your immune system ramps up production. It can also be seen after vaccination.

What to do:

Usually resolves on its own. Retest in a few weeks. If persistently elevated without an obvious trigger, mention to your doctor.

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Lymphocytes: {{value}} {{unit}} — borderline high

High

Your lymphocytes are elevated — likely reacting to a virus

A noticeably elevated lymphocyte count (lymphocytosis) is most often caused by viral infections like Epstein-Barr (mono), CMV, or whooping cough. Rarely, it can indicate a chronic lymphocytic leukemia (CLL) in older adults.

What to do:

See your doctor to determine the cause, especially if you've had prolonged fatigue, swollen lymph nodes, or night sweats.

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Lymphocytes: {{value}} {{unit}} — above reference range (ref: {{low}}–{{high}})

Critically High

Lymphocytes are very high — blood cancer must be ruled out

At this very large level of lymphocytosis, a blood cancer such as chronic lymphocytic leukemia (CLL) or acute lymphoblastic leukemia (ALL) must be urgently considered, in addition to noticeable viral infections.

What to do:

Seek urgent medical evaluation today. A blood smear review and hematology consultation are needed promptly.

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Lymphocytes: {{value}} {{unit}} — very high (ref: {{low}}–{{high}})

What your result means

Critically Low

Your immune memory cells are very low — serious immune compromise

What to do:

This requires urgent medical evaluation. Causes include HIV, certain medications, and immunodeficiency conditions. Seek care today.

Show lab quote format

Lymphocytes: {{value}} {{unit}} — very low (ref: {{low}}–{{high}})

Low

Your virus-fighting immune cells are running low

What to do:

Your doctor should investigate if this persists or if you have frequent infections. Stress reduction, good sleep, and nutrition support lymphocyte recovery.

Show lab quote format

Lymphocytes: {{value}} {{unit}} — below reference range (ref: {{low}}–{{high}})

Borderline Low

Your lymphocytes are a little low — often temporary after illness

A borderline low lymphocyte count is common after viral infections and periods of significant physical or psychological stress. It usually recovers on its own.

What to do:

Monitor with a repeat test in 4–6 weeks. Focus on good sleep and stress management to support immune recovery.

Show lab quote format

Lymphocytes: {{value}} {{unit}} — borderline low

Normal

Your lymphocyte count is healthy

Your lymphocyte count is normal, indicating your adaptive immune system has adequate virus-fighting and antibody-producing resources.

What to do:

No action needed. Good sleep, regular exercise, and a nutrient-dense diet all support lymphocyte health.

Show lab quote format

Lymphocytes: {{value}} {{unit}} — within reference range

Optimal

Your immune memory cells are in great shape

Your lymphocyte count is in the ideal range, suggesting a well-functioning adaptive immune system ready to respond to viral threats and remember past infections.

What to do:

Excellent result. Keep supporting your immune health with consistent sleep, nutrition, and stress management.

Show lab quote format

Lymphocytes: {{value}} {{unit}} — optimal

Borderline High

Your lymphocytes are slightly elevated — often a sign of viral activity

A mildly elevated lymphocyte count often occurs during or after a viral infection, when your immune system ramps up production. It can also be seen after vaccination.

What to do:

Usually resolves on its own. Retest in a few weeks. If persistently elevated without an obvious trigger, mention to your doctor.

Show lab quote format

Lymphocytes: {{value}} {{unit}} — borderline high

High

Your lymphocytes are elevated — likely reacting to a virus

What to do:

See your doctor to determine the cause, especially if you've had prolonged fatigue, swollen lymph nodes, or night sweats.

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Lymphocytes: {{value}} {{unit}} — above reference range (ref: {{low}}–{{high}})

Critically High

Lymphocytes are very high — blood cancer must be ruled out

What to do:

Seek urgent medical evaluation today. A blood smear review and hematology consultation are needed promptly.

Show lab quote format

Lymphocytes: {{value}} {{unit}} — very high (ref: {{low}}–{{high}})

Reference Range

What this test measures

What your result means

Your immune memory cells are very low — serious immune compromise

Your virus-fighting immune cells are running low

Your lymphocytes are a little low — often temporary after illness

Your lymphocyte count is healthy

Your immune memory cells are in great shape

Your lymphocytes are slightly elevated — often a sign of viral activity

Your lymphocytes are elevated — likely reacting to a virus

Lymphocytes are very high — blood cancer must be ruled out

Have a result for Absolute Lymphocyte Count?

Absolute Lymphocyte Count

Reference Range

What this test measures

What your result means

Your immune memory cells are very low — serious immune compromise

Your virus-fighting immune cells are running low

Your lymphocytes are a little low — often temporary after illness

Your lymphocyte count is healthy

Your immune memory cells are in great shape

Your lymphocytes are slightly elevated — often a sign of viral activity

Your lymphocytes are elevated — likely reacting to a virus

Lymphocytes are very high — blood cancer must be ruled out

Have a result for Absolute Lymphocyte Count?