Vitamin D Binding Protein (DBP) Probe
This test measures the presence of vitamin D binding protein (DBP) in your blood, which helps transport vitamin D and other steroids. It may be used to assess vitamin D metabolism or related conditions.
["This test helps doctors understand how your body processes vitamin D and related hormones."]
Key facts at a glance
- LOINC
- 101428-1
- Short code
- VZV DNA Resp Ql NAA+probe
- Synonyms
- VZV DNA Resp Ql NAA+probe
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- probe-amp-tar
- 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 This Test Might Be Ordered
Your healthcare provider may recommend this test if you have symptoms or risk factors for conditions involving vitamin D binding protein, such as certain metabolic disorders or genetic conditions affecting hormone transport. It might also be used in research or specialized clinical settings where precise measurement of DBP is important.
What to Expect Before the Test
No special preparation is typically needed. You may be asked to fast for a few hours before your blood is drawn, but this depends on your healthcare provider’s instructions. Bring any medications or supplements you’re taking to your appointment.
How the Test Works
Blood is drawn from a vein in your arm. The sample is tested using a specialized probe method to detect the presence and concentration of vitamin D binding protein. This test does not measure vitamin D levels directly but focuses on the protein responsible for transporting it.
What the Results Mean
Results from this test are qualitative (yes/no) or semi-quantitative, indicating whether DBP is present or detected in your sample. Exact values may not be provided, but your healthcare provider will interpret the findings in the context of your medical history and symptoms.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Vitamin D binding protein plays a critical role in transporting vitamin D and other hormones in your bloodstream. Abnormal levels may suggest underlying conditions affecting hormone metabolism, such as certain genetic disorders or liver/kidney dysfunction. This test can be part of a broader evaluation in specialized cases.
Short name
Vitamin D Binding Protein Test
Frequently asked questions
What does a positive result mean?
Does this test measure vitamin D levels?
How long will I need to wait for results?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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