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Bilirubin, Dialysate Fluid — Mass Concentration

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

Measures the amount of bilirubin in a sample of dialysis fluid. This is not a standard blood test.

Quick summary

["This test checks how much bilirubin is present in dialysis fluid."]

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

Key facts at a glance

LOINC
14420-4
Short code
Bilirub Dial fld-mCnc
Synonyms
Bilirub Dial fld-mCnc
Category
liver
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

What is this test?

This test measures the concentration of bilirubin, a yellow pigment produced during the breakdown of red blood cells, in dialysis fluid. It is performed on a fluid sample rather than a blood sample.

Why might I need this test?

A bilirubin measurement may be ordered when dialysis fluid is being evaluated for contamination, discoloration, or an unexpected change in composition. The reason for testing depends on the type of dialysis and the situation in which the sample was collected.

How is the test performed?

The laboratory analyzes a submitted sample of dialysis fluid using a validated method for measuring bilirubin. The result is reported as a mass concentration, meaning the amount of bilirubin per unit volume of fluid.

How do I prepare for the test?

No special preparation is usually required because the sample is collected from dialysis fluid rather than from your body. Follow your dialysis unit's collection instructions and make sure the sample is labeled with the fluid type, collection time, and other required information.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Bilirubin, Dialysate Fluid

Frequently asked questions

Is this the same as a bilirubin blood test?
No. This test measures bilirubin in dialysis fluid, while a standard bilirubin blood test measures bilirubin in serum or plasma.
What does bilirubin measure?
Bilirubin is a yellow pigment formed when the body breaks down red blood cells. Its concentration reflects the amount of this pigment in the tested sample.
Does an abnormal result always mean there is a liver problem?
No. Because this test uses dialysis fluid rather than blood, an abnormal result may reflect contamination or another fluid-related issue. Your clinician will interpret it in the context of your treatment and other test 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