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Mid-Atlantic · Selenium Blood Test – Deficiency Testing

Selenium Blood Test – Deficiency Testing in Delaware

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 Delaware

Here is what you need before ordering and completing the Selenium Blood Test – Deficiency Testing in DE. 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 Delaware communities

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

Dover125,931Selenium Blood Test – Deficiency TestingWilmington70,926Selenium Blood Test – Deficiency TestingNewark31,393Selenium Blood Test – Deficiency TestingMiddletown23,001Selenium Blood Test – Deficiency TestingBear21,625Selenium Blood Test – Deficiency TestingGlasgow15,342Selenium Blood Test – Deficiency TestingBrookside14,202Selenium Blood Test – Deficiency TestingHockessin13,464Selenium Blood Test – Deficiency TestingSmyrna12,619Selenium Blood Test – Deficiency TestingPike Creek Valley11,718Selenium Blood Test – Deficiency TestingMilford11,249Selenium Blood Test – Deficiency TestingClaymont9,508Selenium Blood Test – Deficiency TestingWilmington Manor8,212Selenium Blood Test – Deficiency TestingNorth Star8,009Selenium Blood Test – Deficiency TestingSeaford7,852Selenium Blood Test – Deficiency TestingPike Creek7,398Selenium Blood Test – Deficiency TestingGeorgetown7,079Selenium Blood Test – Deficiency TestingEdgemoor6,681Selenium Blood Test – Deficiency TestingMillsboro6,542Selenium Blood Test – Deficiency TestingElsmere6,167Selenium Blood Test – Deficiency TestingNew Castle5,482Selenium Blood Test – Deficiency TestingHighland Acres3,910Selenium Blood Test – Deficiency TestingLaurel3,886Selenium Blood Test – Deficiency TestingClayton3,845Selenium Blood Test – Deficiency TestingCamden3,786Selenium Blood Test – Deficiency TestingRising Sun-Lebanon3,772Selenium Blood Test – Deficiency TestingHarrington3,730Selenium Blood Test – Deficiency TestingLewes3,257Selenium Blood Test – Deficiency TestingMilton3,224Selenium Blood Test – Deficiency TestingDover Base Housing3,135Selenium Blood Test – Deficiency TestingLong Neck3,022Selenium Blood Test – Deficiency TestingSelbyville2,806Selenium Blood Test – Deficiency TestingGreenville2,763Selenium Blood Test – Deficiency TestingTownsend2,671Selenium Blood Test – Deficiency TestingOcean View2,556Selenium Blood Test – Deficiency TestingBridgeville2,499Selenium Blood Test – Deficiency TestingDelmar2,241Selenium Blood Test – Deficiency TestingRiverview2,091Selenium Blood Test – Deficiency TestingDelaware City1,885Selenium Blood Test – Deficiency TestingWoodside East1,867Selenium Blood Test – Deficiency TestingMillville1,790Selenium Blood Test – Deficiency TestingKent Acres1,756Selenium Blood Test – Deficiency TestingCheswold1,705Selenium Blood Test – Deficiency TestingWyoming1,636Selenium Blood Test – Deficiency TestingRodney Village1,472Selenium Blood Test – Deficiency TestingGreenwood1,459Selenium Blood Test – Deficiency TestingRehoboth Beach1,392Selenium Blood Test – Deficiency TestingBellefonte1,294Selenium Blood Test – Deficiency TestingNewport1,224Selenium Blood Test – Deficiency TestingSt. Georges1,197Selenium Blood Test – Deficiency TestingFelton1,144Selenium Blood Test – Deficiency TestingFrankford1,088Selenium Blood Test – Deficiency TestingDagsboro1,087Selenium Blood Test – Deficiency Testing