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Southwest · Selenium Blood Test – Deficiency Testing

Selenium Blood Test – Deficiency Testing in Arizona

This page explains the selenium blood test – deficiency testing, what it measures, and how to order it. A selenium blood test measures the amount of selenium in your blood. It can help assess exposure or nutritional status.

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

Lab requirements in Arizona

Here is what you need before ordering and completing the Selenium Blood Test – Deficiency Testing in AZ. 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
Your lab will provide specific instructions, which may include fasting or avoiding certain supplements. Always follow the collection lab's guidance.
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 test quantifies selenium, a trace mineral that acts as an antioxidant and supports thyroid and immune function. It is used to monitor industrial exposure or to evaluate a possible deficiency.

What it measures

  • Selenium — Reflects recent selenium intake and body status.
  • Selenium level — Used to assess deficiency or excess exposure.
  • Whole blood selenium — Measures selenium in whole blood, which may better reflect long-term status.

What the test involves

A healthcare professional collects a small sample of blood, 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 of deficiency, such as muscle weakness or hair loss, or if you work with selenium in an industrial setting. It can also be part of a nutritional assessment.

Preparation

Your lab will provide specific instructions, which may include fasting or avoiding certain supplements. Always follow the collection lab's guidance.

How results are reported

Results are reported as a concentration of selenium in your blood, often in micrograms per deciliter or micromoles per liter. Reference ranges vary by laboratory, so your result should be interpreted in the context of the lab's own range.

Before you go

  • Whether fasting is required before the test
  • If you should avoid certain supplements or foods
  • How and when you will receive your results

Cities

Selenium Blood Test – Deficiency Testing in Arizona communities

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

Phoenix4,047,095Selenium Blood Test – Deficiency TestingTucson875,284Selenium Blood Test – Deficiency TestingMesa497,752Selenium Blood Test – Deficiency TestingChandler272,439Selenium Blood Test – Deficiency TestingGilbert262,249Selenium Blood Test – Deficiency TestingAvondale254,537Selenium Blood Test – Deficiency TestingGlendale245,685Selenium Blood Test – Deficiency TestingScottsdale238,685Selenium Blood Test – Deficiency TestingPeoria187,733Selenium Blood Test – Deficiency TestingTempe178,862Selenium Blood Test – Deficiency TestingSurprise141,875Selenium Blood Test – Deficiency TestingYuma135,933Selenium Blood Test – Deficiency TestingPrescott Valley97,901Selenium Blood Test – Deficiency TestingSan Tan Valley96,127Selenium Blood Test – Deficiency TestingGoodyear93,651Selenium Blood Test – Deficiency TestingBuckeye89,711Selenium Blood Test – Deficiency TestingFlagstaff81,682Selenium Blood Test – Deficiency TestingCasas Adobes70,224Selenium Blood Test – Deficiency TestingQueen Creek57,728Selenium Blood Test – Deficiency TestingMaricopa57,075Selenium Blood Test – Deficiency TestingLake Havasu City56,510Selenium Blood Test – Deficiency TestingCasa Grande53,488Selenium Blood Test – Deficiency TestingMarana50,834Selenium Blood Test – Deficiency TestingCatalina Foothills50,096Selenium Blood Test – Deficiency TestingOro Valley46,515Selenium Blood Test – Deficiency TestingPrescott45,063Selenium Blood Test – Deficiency TestingSierra Vista44,944Selenium Blood Test – Deficiency TestingBullhead City41,064Selenium Blood Test – Deficiency TestingApache Junction38,311Selenium Blood Test – Deficiency TestingSun City37,693Selenium Blood Test – Deficiency TestingEl Mirage35,410Selenium Blood Test – Deficiency TestingSan Luis35,289Selenium Blood Test – Deficiency TestingSahuarita33,524Selenium Blood Test – Deficiency TestingKingman32,204Selenium Blood Test – Deficiency TestingDrexel Heights30,599Selenium Blood Test – Deficiency TestingFortuna Foothills26,727Selenium Blood Test – Deficiency TestingSun City West26,354Selenium Blood Test – Deficiency TestingFlorence25,356Selenium Blood Test – Deficiency TestingFountain Hills23,639Selenium Blood Test – Deficiency TestingAnthem22,750Selenium Blood Test – Deficiency TestingRio Rico20,914Selenium Blood Test – Deficiency TestingGreen Valley20,729Selenium Blood Test – Deficiency TestingNogales19,829Selenium Blood Test – Deficiency TestingNew River17,731Selenium Blood Test – Deficiency TestingFlowing Wells16,965Selenium Blood Test – Deficiency TestingDouglas16,470Selenium Blood Test – Deficiency TestingPayson16,229Selenium Blood Test – Deficiency TestingFort Mohave15,872Selenium Blood Test – Deficiency TestingEloy15,171Selenium Blood Test – Deficiency TestingTanque Verde14,946Selenium Blood Test – Deficiency TestingSierra Vista Southeast14,822Selenium Blood Test – Deficiency TestingVail14,715Selenium Blood Test – Deficiency TestingSomerton14,126Selenium Blood Test – Deficiency TestingSun Lakes13,912Selenium Blood Test – Deficiency TestingCoolidge13,347Selenium Blood Test – Deficiency TestingValencia West12,887Selenium Blood Test – Deficiency TestingNew Kingman-Butler12,858Selenium Blood Test – Deficiency TestingChino Valley12,854Selenium Blood Test – Deficiency TestingParadise Valley12,666Selenium Blood Test – Deficiency TestingVerde Village12,658Selenium Blood Test – Deficiency Testing