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Pacific · Vitamin B6 Test – Vitamin Deficiency Testing

Vitamin B6 Test – Vitamin Deficiency Testing in California

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 California

Here is what you need before ordering and completing the Vitamin B6 Test – Vitamin Deficiency Testing in CA. 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 California communities

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

Los Angeles12,121,244Vitamin B6 Test – Vitamin Deficiency TestingSan Francisco3,290,197Vitamin B6 Test – Vitamin Deficiency TestingSan Diego3,084,174Vitamin B6 Test – Vitamin Deficiency TestingRiverside2,022,285Vitamin B6 Test – Vitamin Deficiency TestingSacramento1,924,167Vitamin B6 Test – Vitamin Deficiency TestingSan Jose1,729,879Vitamin B6 Test – Vitamin Deficiency TestingFresno719,558Vitamin B6 Test – Vitamin Deficiency TestingConcord640,270Vitamin B6 Test – Vitamin Deficiency TestingBakersfield590,845Vitamin B6 Test – Vitamin Deficiency TestingMission Viejo588,540Vitamin B6 Test – Vitamin Deficiency TestingMurrieta509,526Vitamin B6 Test – Vitamin Deficiency TestingLong Beach466,565Vitamin B6 Test – Vitamin Deficiency TestingOakland437,548Vitamin B6 Test – Vitamin Deficiency TestingStockton406,822Vitamin B6 Test – Vitamin Deficiency TestingVictorville389,060Vitamin B6 Test – Vitamin Deficiency TestingModesto382,994Vitamin B6 Test – Vitamin Deficiency TestingLancaster381,732Vitamin B6 Test – Vitamin Deficiency TestingOxnard366,330Vitamin B6 Test – Vitamin Deficiency TestingIndio361,831Vitamin B6 Test – Vitamin Deficiency TestingAnaheim348,204Vitamin B6 Test – Vitamin Deficiency TestingAntioch322,796Vitamin B6 Test – Vitamin Deficiency TestingSanta Rosa314,196Vitamin B6 Test – Vitamin Deficiency TestingSanta Ana313,818Vitamin B6 Test – Vitamin Deficiency TestingIrvine297,868Vitamin B6 Test – Vitamin Deficiency TestingSanta Clarita275,230Vitamin B6 Test – Vitamin Deficiency TestingChula Vista274,818Vitamin B6 Test – Vitamin Deficiency TestingVisalia249,804Vitamin B6 Test – Vitamin Deficiency TestingFremont231,502Vitamin B6 Test – Vitamin Deficiency TestingSan Bernardino220,821Vitamin B6 Test – Vitamin Deficiency TestingThousand Oaks211,045Vitamin B6 Test – Vitamin Deficiency TestingMoreno Valley208,371Vitamin B6 Test – Vitamin Deficiency TestingFontana208,087Vitamin B6 Test – Vitamin Deficiency TestingSalinas199,290Vitamin B6 Test – Vitamin Deficiency TestingHuntington Beach198,735Vitamin B6 Test – Vitamin Deficiency TestingSanta Barbara198,240Vitamin B6 Test – Vitamin Deficiency TestingGlendale196,512Vitamin B6 Test – Vitamin Deficiency TestingHemet191,170Vitamin B6 Test – Vitamin Deficiency TestingVallejo181,882Vitamin B6 Test – Vitamin Deficiency TestingElk Grove175,510Vitamin B6 Test – Vitamin Deficiency TestingOntario175,223Vitamin B6 Test – Vitamin Deficiency TestingOceanside174,461Vitamin B6 Test – Vitamin Deficiency TestingRancho Cucamonga173,946Vitamin B6 Test – Vitamin Deficiency TestingGarden Grove172,708Vitamin B6 Test – Vitamin Deficiency TestingPalmdale167,987Vitamin B6 Test – Vitamin Deficiency TestingSanta Cruz165,933Vitamin B6 Test – Vitamin Deficiency TestingHayward162,254Vitamin B6 Test – Vitamin Deficiency TestingCorona157,844Vitamin B6 Test – Vitamin Deficiency TestingMerced157,617Vitamin B6 Test – Vitamin Deficiency TestingSunnyvale155,550Vitamin B6 Test – Vitamin Deficiency TestingPomona151,592Vitamin B6 Test – Vitamin Deficiency TestingEscondido151,443Vitamin B6 Test – Vitamin Deficiency TestingTorrance147,156Vitamin B6 Test – Vitamin Deficiency TestingRoseville145,687Vitamin B6 Test – Vitamin Deficiency TestingFairfield145,163Vitamin B6 Test – Vitamin Deficiency TestingFullerton142,964Vitamin B6 Test – Vitamin Deficiency TestingSanta Maria142,230Vitamin B6 Test – Vitamin Deficiency TestingOrange139,195Vitamin B6 Test – Vitamin Deficiency TestingPasadena138,771Vitamin B6 Test – Vitamin Deficiency TestingYuba City129,536Vitamin B6 Test – Vitamin Deficiency TestingSanta Clara127,922Vitamin B6 Test – Vitamin Deficiency Testing