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Serum or plasma mass concentration of Sudan IV (lipid stain dye)

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

This test measures the amount of Sudan IV, a dye used historically in lipid staining, in your blood. It is not commonly used in modern clinical practice but may appear in specialized or research settings.

Quick summary

["This test is rarely ordered and typically requires further clarification by your healthcare provider."]

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

Key facts at a glance

LOINC
10752-4
Short code
Fat Mlk Sudan IV Stn
Synonyms
Fat Mlk Sudan IV Stn
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
sudan-iv-stain
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 Sudan IV Used For?

Sudan IV was traditionally used in medical staining techniques to identify fats and oils in tissues. In blood tests, it may have been part of older diagnostic methods for lipid-related conditions, though newer, more specific tests (like cholesterol or triglyceride panels) are now preferred.

Why Might This Test Be Ordered?

This test is unusual and may be requested in niche research, historical studies, or specialized diagnostic contexts—such as evaluating lipid metabolism in rare conditions. Your doctor would explain the specific reason if it was ordered for you.

What Does a Result Mean?

Since this test is not standard, results would need interpretation by a specialist familiar with Sudan IV staining. Abnormal findings might suggest abnormal lipid deposition or staining patterns, but this is highly context-dependent.

What Are Common Causes of Abnormal Results?

Abnormal results could indicate conditions affecting lipid storage or metabolism, though this is speculative without clinical correlation. Always discuss results with your healthcare provider.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Sudan IV Mass Concentration

Frequently asked questions

Why was this test ordered?
This test is rarely performed in routine care. If ordered, it may be part of a specialized study, research protocol, or historical diagnostic approach. Your doctor should clarify the purpose with you.
What should I do if this test is ordered?
Ask your healthcare provider for details about why this test was requested. Since it is not a standard clinical test, results may not directly impact treatment decisions unless part of a specific study.
Are there standard reference ranges for this test?
No standard reference ranges exist for Sudan IV mass concentration in blood due to its historical and niche use. Results would require interpretation by a specialist familiar with the test’s context.
  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