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Midwest · Selenium Blood Test – Deficiency Testing

Selenium Blood Test – Deficiency Testing in South Dakota

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 South Dakota

Here is what you need before ordering and completing the Selenium Blood Test – Deficiency Testing in SD. 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 South Dakota communities

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

Sioux Falls189,258Selenium Blood Test – Deficiency TestingRapid City88,076Selenium Blood Test – Deficiency TestingAberdeen28,500Selenium Blood Test – Deficiency TestingBrookings23,432Selenium Blood Test – Deficiency TestingWatertown22,577Selenium Blood Test – Deficiency TestingMitchell15,677Selenium Blood Test – Deficiency TestingYankton15,332Selenium Blood Test – Deficiency TestingPierre14,126Selenium Blood Test – Deficiency TestingHuron14,060Selenium Blood Test – Deficiency TestingSpearfish12,031Selenium Blood Test – Deficiency TestingBox Elder11,527Selenium Blood Test – Deficiency TestingVermillion11,506Selenium Blood Test – Deficiency TestingBrandon10,745Selenium Blood Test – Deficiency TestingRapid Valley7,875Selenium Blood Test – Deficiency TestingSturgis7,088Selenium Blood Test – Deficiency TestingHarrisburg6,645Selenium Blood Test – Deficiency TestingMadison6,388Selenium Blood Test – Deficiency TestingBelle Fourche5,561Selenium Blood Test – Deficiency TestingTea5,535Selenium Blood Test – Deficiency TestingDell Rapids3,940Selenium Blood Test – Deficiency TestingDakota Dunes3,688Selenium Blood Test – Deficiency TestingMilbank3,488Selenium Blood Test – Deficiency TestingHot Springs3,407Selenium Blood Test – Deficiency TestingHartford3,263Selenium Blood Test – Deficiency TestingMobridge3,215Selenium Blood Test – Deficiency TestingPine Ridge3,085Selenium Blood Test – Deficiency TestingBlackhawk3,081Selenium Blood Test – Deficiency TestingCanton3,054Selenium Blood Test – Deficiency TestingLead2,989Selenium Blood Test – Deficiency TestingNorth Sioux City2,956Selenium Blood Test – Deficiency TestingWinner2,882Selenium Blood Test – Deficiency TestingSummerset2,875Selenium Blood Test – Deficiency TestingLennox2,617Selenium Blood Test – Deficiency TestingSisseton2,433Selenium Blood Test – Deficiency TestingFort Pierre2,426Selenium Blood Test – Deficiency TestingColonial Pine Hills2,425Selenium Blood Test – Deficiency TestingChamberlain2,400Selenium Blood Test – Deficiency TestingBeresford2,359Selenium Blood Test – Deficiency TestingFlandreau2,298Selenium Blood Test – Deficiency TestingElk Point2,248Selenium Blood Test – Deficiency TestingNorth Spearfish2,198Selenium Blood Test – Deficiency TestingRedfield2,160Selenium Blood Test – Deficiency TestingVolga2,146Selenium Blood Test – Deficiency TestingSpringfield2,108Selenium Blood Test – Deficiency TestingCuster2,067Selenium Blood Test – Deficiency TestingRosebud1,994Selenium Blood Test – Deficiency TestingWebster1,772Selenium Blood Test – Deficiency TestingParkston1,761Selenium Blood Test – Deficiency TestingNorth Eagle Butte1,731Selenium Blood Test – Deficiency TestingFreeman1,711Selenium Blood Test – Deficiency TestingGroton1,641Selenium Blood Test – Deficiency TestingWagner1,533Selenium Blood Test – Deficiency TestingGettysburg1,464Selenium Blood Test – Deficiency TestingEagle Butte1,421Selenium Blood Test – Deficiency TestingKyle1,398Selenium Blood Test – Deficiency TestingClear Lake1,396Selenium Blood Test – Deficiency TestingGarretson1,367Selenium Blood Test – Deficiency TestingCrooks1,365Selenium Blood Test – Deficiency TestingAurora1,339Selenium Blood Test – Deficiency TestingMiller1,338Selenium Blood Test – Deficiency Testing