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Vitamin D binding protein (DBP) mass concentration

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

This test measures the amount of vitamin D-binding protein in your blood, which helps transport vitamin D and other hormones.

Quick summary

["Understanding your vitamin D-binding protein levels can support overall health, especially when vitamin D status is assessed."]

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

Key facts at a glance

LOINC
54101-1
Short code
VX acid Ur-mCnc
Synonyms
VX acid Ur-mCnc
Category
chemistry
Sample
urine
Container
Sterile urine container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Specimen volume
10 mL
Stability
Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why This Test Might Be Ordered

Your healthcare provider may recommend this test if they suspect vitamin D deficiency, metabolic bone disease, or conditions affecting protein function in your blood. It can also be part of broader evaluations for kidney function or genetic disorders.

What to Expect Before the Test

No special preparation is needed for this blood test. You may have a small needle inserted into your arm to draw a blood sample. If you’re concerned about needles, let your provider know so they can offer alternatives.

What the Results Mean

While vitamin D-binding protein levels can vary based on factors like diet, kidney function, and genetics, they are not typically used alone to diagnose vitamin D deficiency. Instead, they may be part of a larger panel that includes vitamin D measurements.

Common Conditions Monitored

This test can help identify conditions like nephrotic syndrome (a kidney disorder causing protein loss) or hereditary conditions affecting protein metabolism. It may also be useful in research or specialized clinical settings.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Vitamin D-binding protein level

Frequently asked questions

How long does it take to get my results?
Results from this test are typically available within 1 to 3 business days, depending on your lab and healthcare provider’s workflow. Follow-up with your provider to discuss the meaning of your results.
What does a low or high level mean?
Low levels of vitamin D-binding protein might suggest kidney problems or genetic conditions affecting protein synthesis. High levels could be due to liver disease or other metabolic factors. Your provider will interpret results in the context of your overall health and other test results.
Can diet affect this test?
Dietary factors like protein intake or certain medications (e.g., steroids) may influence protein levels, but vitamin D-binding protein itself is not directly affected by diet. Your provider will consider all relevant factors when reviewing your 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