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Vitamin D binding protein (DBP) concentration

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

This test measures the level of vitamin D binding protein, a protein in your blood that helps transport vitamin D and other fat-soluble compounds.

Quick summary

["Your doctor may check this test to understand how your body processes certain vitamins and minerals."]

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

Key facts at a glance

LOINC
86514-7
Short code
CHIKV RNA Amn Ql NAA+probe
Synonyms
CHIKV RNA Amn Ql NAA+probe
Category
chemistry
Sample
fluid
Container
Sterile tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
probe-amp-tar
Specimen volume
2-5 mL
Stability
Room temperature: 2h, Refrigerated: 24h
Hemolysis max
300
TAT
4–24 hours
Order
routine

Why This Test Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms like fatigue, muscle weakness, or bone pain, which could indicate vitamin D or mineral imbalances. It may also be used in research or specialized clinical studies involving vitamin D metabolism.

What to Expect Before the Test

No special preparation is usually needed. You may have blood drawn from a vein in your arm, similar to other blood tests. If you’re on blood thinners, let your provider know before the test.

What the Results Mean

Results help assess how well your body is transporting certain substances, though they don’t directly measure vitamin D levels. High or low levels may suggest conditions like kidney disease or genetic disorders affecting protein function.

Common Conditions Monitored

While not commonly used for routine screening, this test can be part of investigations for conditions like hereditary vitamin D-resistant rickets or kidney-related protein disorders.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

DBP (Serum)

Frequently asked questions

What does a high or low DBP level mean in this test?
This test alone does not provide direct clinical interpretation of DBP levels. High or low values may be evaluated in the context of other tests or clinical findings, such as kidney function or genetic testing, to understand potential metabolic issues.
Does this test require fasting?
No fasting is typically required for this test. Blood is drawn as part of a standard venipuncture procedure.
How long does it take to get results?
Results may vary by lab, but many routine tests are reported within 1–3 business days. For specialized or research tests, turnaround times can differ; always confirm with your healthcare provider.
  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