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Mid-Atlantic · Selenium Urine Test – Deficiency Testing

Selenium Urine Test – Deficiency Testing in Maryland

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 Maryland

Here is what you need before ordering and completing the Selenium Urine Test – Deficiency Testing in MD. 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, including MD. 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 Maryland communities

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

Baltimore2,205,092Selenium Urine Test – Deficiency TestingBel Air South222,834Selenium Urine Test – Deficiency TestingHagerstown194,602Selenium Urine Test – Deficiency TestingFrederick175,032Selenium Urine Test – Deficiency TestingWaldorf119,442Selenium Urine Test – Deficiency TestingSalisbury108,982Selenium Urine Test – Deficiency TestingColumbia105,086Selenium Urine Test – Deficiency TestingGermantown90,235Selenium Urine Test – Deficiency TestingSilver Spring82,472Selenium Urine Test – Deficiency TestingEllicott City74,432Selenium Urine Test – Deficiency TestingEldersburg70,639Selenium Urine Test – Deficiency TestingGlen Burnie69,739Selenium Urine Test – Deficiency TestingGaithersburg68,827Selenium Urine Test – Deficiency TestingRockville67,095Selenium Urine Test – Deficiency TestingDundalk66,426Selenium Urine Test – Deficiency TestingBethesda66,294Selenium Urine Test – Deficiency TestingTowson59,014Selenium Urine Test – Deficiency TestingBowie58,113Selenium Urine Test – Deficiency TestingSevern53,955Selenium Urine Test – Deficiency TestingAspen Hill53,850Selenium Urine Test – Deficiency TestingWheaton51,836Selenium Urine Test – Deficiency TestingNorth Bethesda50,695Selenium Urine Test – Deficiency TestingPotomac46,891Selenium Urine Test – Deficiency TestingOdenton43,488Selenium Urine Test – Deficiency TestingCatonsville42,789Selenium Urine Test – Deficiency TestingWoodlawn42,053Selenium Urine Test – Deficiency TestingEssex40,710Selenium Urine Test – Deficiency TestingAnnapolis40,581Selenium Urine Test – Deficiency TestingClinton39,925Selenium Urine Test – Deficiency TestingSeverna Park39,108Selenium Urine Test – Deficiency TestingChillum36,428Selenium Urine Test – Deficiency TestingOlney35,815Selenium Urine Test – Deficiency TestingRandallstown35,641Selenium Urine Test – Deficiency TestingOwings Mills35,170Selenium Urine Test – Deficiency TestingCollege Park34,961Selenium Urine Test – Deficiency TestingMontgomery Village34,489Selenium Urine Test – Deficiency TestingPikesville33,549Selenium Urine Test – Deficiency TestingPasadena31,583Selenium Urine Test – Deficiency TestingBel Air North30,969Selenium Urine Test – Deficiency TestingParkville30,783Selenium Urine Test – Deficiency TestingMilford Mill30,685Selenium Urine Test – Deficiency TestingMiddle River30,606Selenium Urine Test – Deficiency TestingCarney29,873Selenium Urine Test – Deficiency TestingCrofton29,812Selenium Urine Test – Deficiency TestingLaurel29,438Selenium Urine Test – Deficiency TestingPerry Hall29,165Selenium Urine Test – Deficiency TestingSouth Laurel27,998Selenium Urine Test – Deficiency TestingReisterstown27,917Selenium Urine Test – Deficiency TestingIlchester27,513Selenium Urine Test – Deficiency TestingClarksburg27,354Selenium Urine Test – Deficiency TestingLochearn26,995Selenium Urine Test – Deficiency TestingSuitland26,375Selenium Urine Test – Deficiency TestingFort Washington25,840Selenium Urine Test – Deficiency TestingFairland25,324Selenium Urine Test – Deficiency TestingArnold25,056Selenium Urine Test – Deficiency TestingEdgewood25,004Selenium Urine Test – Deficiency TestingGreenbelt24,602Selenium Urine Test – Deficiency TestingLandover24,508Selenium Urine Test – Deficiency TestingNorth Potomac24,449Selenium Urine Test – Deficiency TestingNorth Laurel24,233Selenium Urine Test – Deficiency Testing