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Quest Diagnostics

Micronutrient, Vitamin B6, Plasma

Quest Diagnostics

Sample type: Plasma

Requires fasting: Yes

Phlebotomy required


Details

Test is used to determine vitamin B6 deficiency or overdosage, for monitoring treatment, and to evaluate wellness and health.


  • Vitamin B6

Estimated days for results: Results should be available in 2 - 5 business days after the sample is collected

Micronutrient, Vitamin B6, Plasma
This test is crucial for identifying if someone has too little or too much Vitamin B6 in their body. It's also used to check how well treatment for Vitamin B6 levels is working and to assess overall wellness and health.

What patients is this test right for?
This test is suitable for individuals who may be experiencing symptoms of Vitamin B6 deficiency or those who are being treated for either low or high Vitamin B6 levels. It can also be beneficial for anyone interested in getting a comprehensive view of their nutritional health.

Signs of Vitamin B6 Deficiency:
  • Weak immune system
  • Cracks at the corners of the mouth
  • Scaly lips or tongue
  • Mood changes
  • 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 on where to find more about this test is not provided.


3–5 business days


≥18 years         5.1–54.8 ng/mL
Reference range not available for individuals <18 years for this micronutrient test.

  • Metabolic function
  • Nutrition
  • Neurological

Overnight fasting is required.
  • Fasting before a blood draw means you don't eat or drink anything except water. 
  • Your doctor should provide any special instructions related to fasting for your test. Always follow your doctor's instructions.

Blood Draw Options with Fullscript
Fullscript offers several convenient phlebotomy options to complete your lab testing:

Quest Diagnostics Patient Service Centers (PSC)

  • Location: Visit a nearby Quest Diagnostics Patient Service Center.
  • Cost: $10 sample collection fee (paid during lab order checkout).
  • Scheduling: Schedule your appointment here. Appointments are recommended to reduce wait times. Walk-ins are accepted, but may experience delays. Aim to arrive 10 minutes before your appointment.
  • Collection Instructions:
    • Bring a valid ID.
    • Bring your digital or printed requisition form, available in the Labs tab of your Fullscript account.
  • Check-in: Scan the QR code from your confirmation email or follow kiosk instructions.
  • More Info: Quest Diagnostics blood draw guide

Getlabs Mobile Phlebotomy

  • Location: Sample collection at your home or office.
  • Cost: $85 sample collection fee (paid during lab order checkout).
  • Availability: Available in most locations enter your ZIP code during checkout to confirm.
  • Scheduling: Schedule your appointment here through your Fullscript account.
  • Collection Instructions:
    • Have your digital or printed requisition form and valid ID ready.
    • Your phlebotomist will contact you by phone to coordinate arrival.
  • More Info: Getlabs blood draw guide

 Specimen
  • Preferred Specimen(s): 1 mL frozen plasma collected in an EDTA (lavender-top) tube - protected from light 
  • Alternative: NA 
  • Minimum Volume: 0.5 mL 
  • Collection Instructions: NA 
 Storage and shipping instructions
  • Transport Container: Amber transport tube 
  • Transport Temperature: Frozen 
  • Specimen Stability
    • Room temperature: 72 hours 
    • Refrigerated: 5 days 
    • Frozen: 14 days, -70° C: 42 days 
  • Reject Criteria
    • Hemolysis • Lipemia • Received room temperature • Received refrigerated 

Minimum age:

18

State restrictions:

Patient can't order this test if they are located in Hawaii, Puerto Rico, New Jersey, New York, or Rhode Island

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