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Midwest · Selenium Urine Test – Deficiency Testing

Selenium Urine Test – Deficiency Testing in Missouri

This page explains the selenium urine test – deficiency testing, what it measures, and how to order it. A selenium urine test measures how much selenium is excreted in urine, which can reflect recent exposure or body levels. It is used to monitor industrial exposure or help evaluate a possible deficiency.

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 Selenium Urine Test – 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
Some tests require fasting or avoiding certain foods or drinks beforehand. You will be informed when you order — confirm the details with the collection lab.
Preparation
Preparation depends on the type of urine collection and the laboratory's procedures. Follow the specific instructions provided by the collection lab.
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 measures the amount of selenium in a urine sample. Selenium is a trace element that acts as an antioxidant and supports thyroid and immune function. Urine selenium mainly reflects recent intake and excretion, so it is often used alongside other tests.

What it measures

  • Urine selenium — reflects recent selenium intake and excretion
  • Creatinine (if measured) — helps adjust for urine concentration
  • Collection volume (for 24-hour) — used to calculate total daily excretion

What the test involves

You will collect a urine sample, usually a spot sample or a 24-hour collection, following the lab's instructions. The sample is then sent to the laboratory for analysis.

Why it is often ordered

A clinician may order this test to monitor workplace exposure to selenium or to help assess whether selenium levels are too low. It can also be used to follow up on abnormal findings from other tests.

Preparation

Preparation depends on the type of urine collection and the laboratory's procedures. Follow the specific instructions provided by the collection lab.

How results are reported

Results are reported as a concentration or total amount of selenium in the urine, often with a reference range. Reference ranges vary by laboratory and by the type of collection, so your result should be interpreted in that context.

Before you go

  • Whether a spot or 24-hour urine collection is required
  • Any dietary or supplement restrictions before collection
  • How and when to return the sample to the lab

Cities

Selenium Urine Test – Deficiency Testing in Missouri communities

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

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