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Midwest · Vitamin B6 Test – Vitamin Deficiency Testing

Vitamin B6 Test – Vitamin Deficiency Testing in Missouri

Vitamin B6 Test – Vitamin Deficiency Testing is a laboratory test you can request directly. A vitamin B6 test measures the level of this essential nutrient in your blood to help assess whether you may be deficient.

Sample typeBlood and/or urine at a collection lab
ReferralIncluded — no referral from your own doctor needed

Lab requirements in Missouri

Here is what you need before ordering and completing the Vitamin B6 Test – Vitamin Deficiency Testing in MO. Review each item and confirm the details with the collection lab.

Physician's order
Included. A physician's order is required for lab testing and is provided for you by our partner's physicians — no referral from your own doctor is needed.
Fasting
Fasting is required for this test — follow the collection lab's instructions.
Preparation
Preparation instructions can vary, so follow the specific directions provided by the collection lab. In some cases, you may be asked to fast or to avoid certain supplements before the test.
Sample & visit
A blood and/or urine sample is collected; the visit usually takes about 10 minutes.
Identification
Bring the lab requisition form from your account. The collection lab may also ask for a government-issued photo ID.
Turnaround
1-3 business days
Availability
Our partner lab does not serve ND, RI, NY, NJ, MD or HI. Confirm availability for your location with the collection lab.

Before you go

  • Order your test before visiting a lab, then use the requisition form in your account.
  • Print the requisition form, or fax it to the lab directly from your account.
  • No scheduling is needed — visit the collection lab during its normal business hours.
  • A blood and/or urine sample is collected; the visit usually takes about 10 minutes.
  • Bring a government-issued photo ID in case the lab requests it.
  • Results are posted to your secure account within 1–3 business days.

Requirements are summarized from our partner lab's published policies. Preparation and availability can change — confirm current instructions with the collection lab before your visit.

What this test is

This blood test evaluates the amount of vitamin B6, also called pyridoxine, circulating in your body. It is used to help identify a deficiency or, less commonly, an excess. Mild deficiencies are relatively common and can affect energy, mood, and nerve function.

What it measures

  • Vitamin B6 (pyridoxal 5-phosphate) — Reflects the amount of active vitamin B6 in the blood
  • Pyridoxal 5-phosphate (PLP) — The primary active form of vitamin B6 measured in plasma
  • Pyridoxine — One of the forms of vitamin B6 that can be assessed

What the test involves

The test requires a standard blood draw, usually from a vein in your arm. The sample is then sent to a laboratory for analysis.

Why it is often ordered

A clinician may order this test if you have symptoms that could suggest low vitamin B6, such as tingling in the hands and feet, confusion, or certain types of anemia. It may also be ordered when other conditions or medications are known to affect vitamin B6 levels.

Preparation

Preparation instructions can vary, so follow the specific directions provided by the collection lab. In some cases, you may be asked to fast or to avoid certain supplements before the test.

How results are reported

Results are typically reported as a number that indicates the level of vitamin B6 in your blood. Reference ranges differ from one laboratory to another, so your result should always be interpreted using the range provided by the testing lab.

Before you go

  • Whether fasting is required before the blood draw
  • Any medications or supplements you should avoid beforehand
  • The specific reference range used by the testing laboratory

Cities

Vitamin B6 Test – Vitamin Deficiency Testing in Missouri communities

Choose your city for local context and to order this test.

St. Louis2,092,481Vitamin B6 Test – Vitamin Deficiency TestingKansas City1,644,497Vitamin B6 Test – Vitamin Deficiency TestingSpringfield298,722Vitamin B6 Test – Vitamin Deficiency TestingColumbia136,736Vitamin B6 Test – Vitamin Deficiency TestingIndependence122,230Vitamin B6 Test – Vitamin Deficiency TestingLee's Summit100,772Vitamin B6 Test – Vitamin Deficiency TestingO'Fallon90,802Vitamin B6 Test – Vitamin Deficiency TestingJoplin81,025Vitamin B6 Test – Vitamin Deficiency TestingSt. Joseph80,099Vitamin B6 Test – Vitamin Deficiency TestingSt. Charles70,218Vitamin B6 Test – Vitamin Deficiency TestingBlue Springs58,265Vitamin B6 Test – Vitamin Deficiency TestingSt. Peters57,289Vitamin B6 Test – Vitamin Deficiency TestingFlorissant52,382Vitamin B6 Test – Vitamin Deficiency TestingChesterfield49,675Vitamin B6 Test – Vitamin Deficiency TestingWentzville43,213Vitamin B6 Test – Vitamin Deficiency TestingJefferson City43,076Vitamin B6 Test – Vitamin Deficiency TestingCape Girardeau39,415Vitamin B6 Test – Vitamin Deficiency TestingWildwood35,384Vitamin B6 Test – Vitamin Deficiency TestingOakville35,357Vitamin B6 Test – Vitamin Deficiency TestingUniversity City34,953Vitamin B6 Test – Vitamin Deficiency TestingBallwin30,998Vitamin B6 Test – Vitamin Deficiency TestingLiberty30,129Vitamin B6 Test – Vitamin Deficiency TestingRaytown29,893Vitamin B6 Test – Vitamin Deficiency TestingKirkwood29,233Vitamin B6 Test – Vitamin Deficiency TestingMehlville28,672Vitamin B6 Test – Vitamin Deficiency TestingMaryland Heights28,141Vitamin B6 Test – Vitamin Deficiency TestingGladstone26,825Vitamin B6 Test – Vitamin Deficiency TestingGrandview25,931Vitamin B6 Test – Vitamin Deficiency TestingHazelwood25,466Vitamin B6 Test – Vitamin Deficiency TestingBelton23,832Vitamin B6 Test – Vitamin Deficiency TestingWebster Groves23,817Vitamin B6 Test – Vitamin Deficiency TestingNixa22,925Vitamin B6 Test – Vitamin Deficiency TestingRaymore22,722Vitamin B6 Test – Vitamin Deficiency TestingSedalia21,696Vitamin B6 Test – Vitamin Deficiency TestingOzark20,874Vitamin B6 Test – Vitamin Deficiency TestingArnold20,808Vitamin B6 Test – Vitamin Deficiency TestingOld Jamestown20,382Vitamin B6 Test – Vitamin Deficiency TestingRolla19,949Vitamin B6 Test – Vitamin Deficiency TestingWarrensburg19,509Vitamin B6 Test – Vitamin Deficiency TestingAffton18,925Vitamin B6 Test – Vitamin Deficiency TestingFerguson18,826Vitamin B6 Test – Vitamin Deficiency TestingConcord18,760Vitamin B6 Test – Vitamin Deficiency TestingCreve Coeur18,648Vitamin B6 Test – Vitamin Deficiency TestingRepublic18,313Vitamin B6 Test – Vitamin Deficiency TestingManchester18,308Vitamin B6 Test – Vitamin Deficiency TestingFarmington17,959Vitamin B6 Test – Vitamin Deficiency TestingSpanish Lake17,721Vitamin B6 Test – Vitamin Deficiency TestingKirksville17,600Vitamin B6 Test – Vitamin Deficiency TestingHannibal17,165Vitamin B6 Test – Vitamin Deficiency TestingClayton16,905Vitamin B6 Test – Vitamin Deficiency TestingLake St. Louis16,665Vitamin B6 Test – Vitamin Deficiency TestingPoplar Bluff16,318Vitamin B6 Test – Vitamin Deficiency TestingLemay16,312Vitamin B6 Test – Vitamin Deficiency TestingSikeston16,054Vitamin B6 Test – Vitamin Deficiency TestingOverland15,908Vitamin B6 Test – Vitamin Deficiency TestingFort Leonard Wood15,629Vitamin B6 Test – Vitamin Deficiency TestingGrain Valley15,435Vitamin B6 Test – Vitamin Deficiency TestingCarthage15,395Vitamin B6 Test – Vitamin Deficiency TestingJackson15,272Vitamin B6 Test – Vitamin Deficiency TestingLebanon14,880Vitamin B6 Test – Vitamin Deficiency Testing