Compare this test’s laboratory options
Vitamin B6
Quest Diagnostics1 test optionFrom $77.09
Vitamin B6
Quest DiagnosticsCatalog information reviewed: August 24, 2026 by the Sunridge Medical clinical team.
What this laboratory test evaluates
Vitamin B6, Plasma
This test is crucial for identifying Vitamin B6 levels in the body, helping to detect deficiencies or overdoses. It's also used to monitor treatment effectiveness and assess overall wellness and health.
What patients is this test right for?This test is suitable for individuals who may be experiencing symptoms related to Vitamin B6 deficiency or those under treatment that requires monitoring of Vitamin B6 levels.
Symptoms of Vitamin B6 Deficiency:• Mood changes, like irritability
• Confusion
• Weak immune system
• Skin conditions, such as rashes
• Mouth sores
• Tiredness and low energy
What type of sample is required for this test?1 mL of frozen plasma collected in an EDTA (lavender-top) tube and must be protected from light.
Test Resources:Information not provided.
Additional test information
Test is used to determine vitamin B6 deficiency or overdosage, for monitoring treatment, and to evaluate wellness and health.
Collection and processing
- Sample type: Plasma
- Fasting: Yes
- Estimated laboratory processing: Results should be available in 2 – 5 business days after the sample is collected
How Sunridge uses laboratory information
Sunridge considers the medical question, symptoms, history, medications, prior results, and whether the finding could change care before recommending testing. A laboratory result is not interpreted in isolation and does not establish a diagnosis by itself.
Before requesting this test
Availability, collection requirements, eligibility, and processing estimates can change. Sunridge reviews each request and, when appropriate, creates the order through Fullscript. Follow the current instructions supplied with the approved order.
Common questions about this laboratory test
- What sample does this test require?
- The listed sample type is Plasma. Confirm current collection instructions in the approved order.
- Does this test require fasting?
- The current catalog record lists fasting as: Yes. Follow the instructions supplied with the approved order.
- How long does laboratory processing usually take?
- Results should be available in 2 – 5 business days after the sample is collected. Timing can change after collection or if a laboratory requires additional review.
About this test
Vitamin B6, Plasma
This test is crucial for identifying Vitamin B6 levels in the body, helping to detect deficiencies or overdoses. It's also used to monitor treatment effectiveness and assess overall wellness and health.
What patients is this test right for?This test is suitable for individuals who may be experiencing symptoms related to Vitamin B6 deficiency or those under treatment that requires monitoring of Vitamin B6 levels.
Symptoms of Vitamin B6 Deficiency:• Mood changes, like irritability
• Confusion
• Weak immune system
• Skin conditions, such as rashes
• Mouth sores
• Tiredness and low energy
What type of sample is required for this test?1 mL of frozen plasma collected in an EDTA (lavender-top) tube and must be protected from light.
Test Resources:Information not provided.
Additional details
Test is used to determine vitamin B6 deficiency or overdosage, for monitoring treatment, and to evaluate wellness and health.
Highlighted health areas
- Metabolic function
- Nutrition
- Neurological
Biomarkers and report focus
The exact analytes and report format can change. Confirm the current contents in the Fullscript order before payment.
- Vitamin B6