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Omp Decay Serum Concentration (or Serum Omptin Measurement)

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

This test measures the concentration of a protein called omptin (or its breakdown products) in your serum. Omptin is associated with certain liver and kidney conditions.

Quick summary

["This test helps assess liver and kidney function by tracking protein breakdown over time."]

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

Key facts at a glance

LOINC
2688-0
Short code
OMPdecase Ser-cCnc
Synonyms
OMPdecase Ser-cCnc
Category
electrolyte
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 This Test Measures

Omptin is a protein produced by the liver and kidneys. When these organs are damaged, omptin may break down differently, leading to measurable changes in its concentration. This test specifically looks at how omptin levels decline (decay) in your serum, which can reflect organ health.

Why It’s Done

Your healthcare provider may order this test if you have symptoms like fatigue, swelling, or changes in urine output. It can also be part of monitoring for conditions like chronic liver disease or kidney dysfunction.

How It’s Performed

A blood sample is drawn from a vein, typically in your arm. The serum portion is then analyzed using a specialized laboratory method to measure omptin concentration.

What to Expect Before the Test

No special preparation is usually needed, but you may be asked to fast for a few hours before the test if instructed by your provider.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Omp Decay Serum

Frequently asked questions

This test helps evaluate liver and kidney function by detecting changes in omptin metabolism. Elevated or abnormal decay patterns may indicate organ stress or disease progression.
This test alone isn’t diagnostic for specific conditions but can be part of a broader evaluation alongside other tests and symptoms.
What are the normal results?
Reference ranges vary by lab and may not be widely published. Your results will be compared to your own baseline or clinical context.
Can I eat or drink before this test?
Check with your provider for specific instructions, as fasting may be required in some cases.
  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