Vitamin D Binding Protein (DBP) – Serum Concentration
This test measures the level of vitamin D binding protein in your blood, which helps transport vitamin D and other hormones.
["Vitamin D binding protein supports hormone transport and may influence vitamin D metabolism."]
Key facts at a glance
- LOINC
- 56130-8
- Short code
- CHIKV IGM
- Synonyms
- CHIKV IgM Titr SerPl IF
- Category
- chemistry
- Sample
- serum
- Container
- Serum separator tube (SST) or red-top tube (no anticoagulant); plasma collected in EDTA or heparin tubes is also acceptable
- Units
- N/A
- Ref low
- 0
- Ref high
- 1
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- Immunofluorescence Assay (IFA)
- CPT
- 86790
- SNOMED
- 122620004
- Specimen volume
- 1-2 mL of serum or plasma (minimum 0.5 mL)
- Stability
- Serum or plasma stable for 7 days at 2-8°C; for longer storage, freeze at -20°C or below for up to 30 days. Avoid repeated freeze-thaw cycles. Hemolyzed, lipemic, or icteric specimens may yield unreliable results.
- Hemolysis max
- 100
- Lipemia max
- 100
- Icterus max
- 50
- TAT
- 24–72 hours
- Order
- routine
Why This Test Might Be Ordered
Your healthcare provider may recommend this test if you have symptoms related to vitamin D deficiency, kidney disease, or conditions affecting hormone transport. It may also be part of a broader evaluation for metabolic or endocrine disorders.
What to Expect Before the Test
No special preparation is usually needed. You may fast for 8–12 hours before the test if instructed, but always follow your provider’s specific instructions. Bring any medications you’re currently taking.
What the Test Involves
A healthcare professional will draw blood from a vein in your arm. The sample is sent to a lab for analysis using a specialized immunoassay method to measure DBP concentration.
What the Results Mean
Results help assess how well your body is processing vitamin D and other hormones. Abnormal levels may indicate conditions like kidney disease, liver disorders, or genetic metabolic issues.
Reference range
Titer < 1:10 (Negative); Titer >= 1:10 indicates presumptive evidence of recent or current Chikungunya virus infection. Seroconversion or fourfold rise in titer between acute and convalescent samples confirms recent infection.N/A
No special patient preparation required. Samples should ideally be collected at least 5-7 days after onset of symptoms for optimal IgM antibody detection. Acute and convalescent specimens (2-4 weeks apart) are recommended for seroconversion documentation.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Vitamin D binding protein levels can provide insight into systemic hormone function, particularly in patients with suspected vitamin D disorders, kidney disease, or endocrine imbalances. Elevated or low levels may guide treatment adjustments or further testing for underlying conditions.
Short name
DBP (Serum)
Frequently asked questions
What causes abnormal vitamin D binding protein levels?
How long does it take to get results?
Can lifestyle changes affect this test?
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 15, 2026. · Read our editorial policy