Skip to content

Vitamin D Binding Protein (DBP) Antibody, Serum

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

This test measures antibodies against vitamin D binding protein, a protein that helps transport vitamin D in your blood. It may be used to evaluate autoimmune conditions or certain immune-related disorders.

Quick summary

["This test helps assess immune responses related to vitamin D binding protein."]

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

Key facts at a glance

LOINC
47515-2
Short code
Deprecated VSIV 1 Ab Titr Ser
Synonyms
Deprecated VSIV 1 Ab Titr Ser
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 Might This Test Be Ordered?

Your healthcare provider may order this test if you have symptoms or conditions linked to autoimmune diseases, such as lupus, rheumatoid arthritis, or other immune system disorders. It may also be used to confirm or monitor certain diagnoses where vitamin D binding protein antibodies are relevant.

What Does This Test Involve?

A blood sample is taken from a vein in your arm. The sample is sent to a lab for analysis using an immunoassay method to detect the presence of antibodies against vitamin D binding protein.

What Does the Result Mean?

Results are qualitative (positive or negative) and indicate whether antibodies are present. Elevated levels may suggest an autoimmune reaction or immune system involvement, but interpretation depends on clinical context and other test results.

Common Conditions Monitored or Diagnosed With This Test

This test is less commonly used for routine screening but may be part of a broader evaluation for autoimmune diseases, connective tissue disorders, or conditions where vitamin D binding protein plays a role in immune function.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

DBP Antibody

Frequently asked questions

What does a positive result mean?
A positive result means your blood contains antibodies against vitamin D binding protein. This may indicate an autoimmune response, but it does not definitively diagnose a specific condition. Your doctor will consider this result alongside other tests and symptoms to determine the next steps.
How often will I need this test?
The frequency of this test depends on your medical condition and treatment plan. Your healthcare provider will let you know if follow-up testing is needed, typically based on symptoms, other test results, or ongoing monitoring of your condition.
Can lifestyle changes affect this test?
While vitamin D binding protein itself is not directly influenced by lifestyle changes, managing autoimmune conditions often involves dietary adjustments, exercise, stress reduction, and medications. Discuss any changes with your healthcare provider to ensure they align with your treatment plan.
  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