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Lymphocyte Count in Dialysis Fluid

Published: August 9, 2026Updated: August 16, 2026

This test measures the number of lymphocytes (a type of white blood cell) found in the dialysis fluid used during kidney dialysis treatments.

Quick summary

["This helps monitor immune cell levels in your dialysis fluid during treatment."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
59463-0
Short code
Lymphocytes NFr Dial fld
Synonyms
Lymphocytes NFr Dial fld
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

Why This Test Matters in Dialysis

Lymphocytes play a key role in your immune system. Measuring them in dialysis fluid can help healthcare providers assess how well your immune response is functioning during kidney dialysis. Abnormal levels might indicate immune activation, infection risk, or other health concerns related to your treatment.

What Dialysis Fluid Testing Involves

During dialysis, a special fluid is used to clean your blood. This test checks the lymphocyte count in the fluid that collects waste products from your blood. It’s not a direct blood test but reflects how your immune cells interact with the dialysis process.

How the Test Is Performed

Your dialysis fluid is collected from the machine after treatment. A small sample is analyzed to count lymphocytes. This is usually done using automated lab equipment that detects and measures immune cells in the fluid.

What Results Mean

Results show the number of lymphocytes per unit volume of dialysis fluid. Higher-than-expected counts might suggest immune activation, while very low counts could indicate immune suppression or other health issues. Your healthcare provider will interpret results in the context of your overall health and treatment.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Lymphocyte Count in Dialysis Fluid

Frequently asked questions

What could cause abnormal lymphocyte levels in dialysis fluid?
Abnormal lymphocyte counts in dialysis fluid may be linked to immune responses during dialysis, such as inflammation, infection, or immune system activation. For example, high counts might indicate the body’s immune system is overreacting, while low counts could reflect immune suppression, often seen in patients with chronic kidney disease or those on dialysis for long periods.
How often is this test done?
The frequency depends on your healthcare provider’s guidelines. Some patients may have this test regularly to monitor immune function during dialysis, while others may only need it if symptoms or lab results suggest it’s necessary.
Can lifestyle changes affect this test?
While lifestyle factors like diet, hydration, and stress can influence overall immune health, their direct impact on lymphocyte counts in dialysis fluid is less clear. Your healthcare team will focus on your dialysis treatment and overall health when interpreting these results.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy