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South · Selenium Blood Test – Deficiency Testing

Selenium Blood Test – Deficiency Testing in North Carolina

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 North Carolina

Here is what you need before ordering and completing the Selenium Blood Test – Deficiency Testing in NC. 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 North Carolina communities

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

Charlotte1,516,107Selenium Blood Test – Deficiency TestingRaleigh1,062,018Selenium Blood Test – Deficiency TestingWinston-Salem420,400Selenium Blood Test – Deficiency TestingDurham399,762Selenium Blood Test – Deficiency TestingGreensboro345,270Selenium Blood Test – Deficiency TestingFayetteville328,827Selenium Blood Test – Deficiency TestingAsheville316,694Selenium Blood Test – Deficiency TestingConcord264,492Selenium Blood Test – Deficiency TestingWilmington247,372Selenium Blood Test – Deficiency TestingHickory211,042Selenium Blood Test – Deficiency TestingGastonia194,190Selenium Blood Test – Deficiency TestingHigh Point178,800Selenium Blood Test – Deficiency TestingCary171,603Selenium Blood Test – Deficiency TestingBurlington137,096Selenium Blood Test – Deficiency TestingGreenville122,921Selenium Blood Test – Deficiency TestingJacksonville108,549Selenium Blood Test – Deficiency TestingRocky Mount61,952Selenium Blood Test – Deficiency TestingChapel Hill60,920Selenium Blood Test – Deficiency TestingHuntersville60,166Selenium Blood Test – Deficiency TestingApex58,066Selenium Blood Test – Deficiency TestingKannapolis52,173Selenium Blood Test – Deficiency TestingMooresville48,431Selenium Blood Test – Deficiency TestingWilson47,914Selenium Blood Test – Deficiency TestingWake Forest46,387Selenium Blood Test – Deficiency TestingHolly Springs40,198Selenium Blood Test – Deficiency TestingIndian Trail39,603Selenium Blood Test – Deficiency TestingSalisbury35,258Selenium Blood Test – Deficiency TestingMonroe34,464Selenium Blood Test – Deficiency TestingGoldsboro33,214Selenium Blood Test – Deficiency TestingFuquay-Varina33,135Selenium Blood Test – Deficiency TestingNew Bern31,058Selenium Blood Test – Deficiency TestingCornelius30,925Selenium Blood Test – Deficiency TestingGarner30,859Selenium Blood Test – Deficiency TestingSanford30,024Selenium Blood Test – Deficiency TestingMatthews29,417Selenium Blood Test – Deficiency TestingMorrisville28,824Selenium Blood Test – Deficiency TestingStatesville27,777Selenium Blood Test – Deficiency TestingThomasville26,941Selenium Blood Test – Deficiency TestingAsheboro26,729Selenium Blood Test – Deficiency TestingKernersville26,376Selenium Blood Test – Deficiency TestingMint Hill26,236Selenium Blood Test – Deficiency TestingClayton25,486Selenium Blood Test – Deficiency TestingLeland22,794Selenium Blood Test – Deficiency TestingShelby21,564Selenium Blood Test – Deficiency TestingCarrboro21,237Selenium Blood Test – Deficiency TestingClemmons21,032Selenium Blood Test – Deficiency TestingKinston19,888Selenium Blood Test – Deficiency TestingWaxhaw19,645Selenium Blood Test – Deficiency TestingLexington19,347Selenium Blood Test – Deficiency TestingLumberton19,186Selenium Blood Test – Deficiency TestingKnightdale18,614Selenium Blood Test – Deficiency TestingElizabeth City18,466Selenium Blood Test – Deficiency TestingHarrisburg18,415Selenium Blood Test – Deficiency TestingLenoir18,205Selenium Blood Test – Deficiency TestingBoone18,055Selenium Blood Test – Deficiency TestingHavelock17,570Selenium Blood Test – Deficiency TestingHope Mills17,421Selenium Blood Test – Deficiency TestingMorganton17,389Selenium Blood Test – Deficiency TestingMount Holly17,315Selenium Blood Test – Deficiency TestingPinehurst17,250Selenium Blood Test – Deficiency Testing