Skip to content

Vitamin D Binding Protein (DBP) – Serum

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

This test measures the level of vitamin D binding protein (DBP) in your blood. DBP helps transport vitamin D and other hormones in your body.

Quick summary

["DBP levels may be checked alongside vitamin D or other hormone tests."]

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

Key facts at a glance

LOINC
10428-1
Short code
VZIg Gvn Vol
Synonyms
VZIg Gvn Vol
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
82784
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 Is Done

Your healthcare provider may order this test if they suspect a condition affecting how your body processes vitamin D, hormones, or proteins. It can also be part of a broader evaluation for kidney function or metabolic disorders.

What to Expect Before the Test

No special preparation is needed. You may have a small needle inserted into a vein in your arm for blood collection. If you’re nervous, let your provider know—they can offer ways to make it more comfortable.

What the Test Results Mean

While DBP levels alone don’t diagnose specific conditions, they can help assess protein function or hormone transport. Your results will be reviewed by a healthcare provider in the context of your overall health.

Common Conditions Monitored

This test may be used to monitor conditions like kidney disease, hereditary protein disorders, or metabolic imbalances that affect how proteins like DBP interact with other substances in your body.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

DBP

Frequently asked questions

How often will I need this test?
The frequency depends on your health status. If you have a known condition, your provider may schedule follow-up tests at regular intervals. If this is a one-time check, they’ll let you know when to return.
Can I eat or drink before this test?
You can eat and drink normally unless your provider gives specific instructions. Blood tests don’t typically require fasting.
What do my results mean if they’re outside the expected range?
Your results will be interpreted by a healthcare provider based on your medical history and other test results. High or low levels may indicate underlying issues, but they don’t always point to a single condition.
  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