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Mid-Atlantic · Selenium Blood Test – Deficiency Testing

Selenium Blood Test – Deficiency Testing in Maryland

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 Maryland

Here is what you need before ordering and completing the Selenium Blood 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
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, 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 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 Maryland communities

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

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