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Midwest · Vitamin A Deficiency Test

Vitamin A Deficiency Test in South Dakota

This page explains the vitamin a deficiency test, what it measures, and how to order it. This blood test measures vitamin A levels to help evaluate for a deficiency. It is typically ordered when symptoms suggest low vitamin A or when a person has risk factors.

Sample typeBlood and/or urine at a collection lab
ReferralIncluded — no referral from your own doctor needed

Lab requirements in South Dakota

Here is what you need before ordering and completing the Vitamin A Deficiency Test in SD. 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 instructions can vary, so follow the specific directions provided by the collection lab. Typically, no special preparation is needed, but the lab will confirm any requirements.
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

The vitamin A deficiency test is a blood test that measures the amount of retinol, the primary form of vitamin A, in the blood. It helps assess whether vitamin A stores are adequate for normal vision, immune function, and skin health.

What it measures

  • Retinol — reflects circulating vitamin A levels
  • Retinol-binding protein — indicates vitamin A transport capacity
  • Total vitamin A — may include other retinoid forms

What the test involves

A healthcare professional collects a blood sample, usually from a vein in your arm, using a standard blood draw. 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 such as night blindness, dry eyes, or frequent infections that could indicate low vitamin A. It may also be ordered for individuals with conditions that affect nutrient absorption or those with limited dietary intake.

Preparation

Preparation instructions can vary, so follow the specific directions provided by the collection lab. Typically, no special preparation is needed, but the lab will confirm any requirements.

How results are reported

Results are reported as a numerical value that your clinician interprets. Reference ranges can differ between laboratories, so the lab's own range should be used for context.

Before you go

  • Whether fasting is required before the blood draw
  • Any medications or supplements that might affect results
  • The expected turnaround time for results

Cities

Vitamin A Deficiency Test in South Dakota communities

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

Sioux Falls189,258Vitamin A Deficiency TestRapid City88,076Vitamin A Deficiency TestAberdeen28,500Vitamin A Deficiency TestBrookings23,432Vitamin A Deficiency TestWatertown22,577Vitamin A Deficiency TestMitchell15,677Vitamin A Deficiency TestYankton15,332Vitamin A Deficiency TestPierre14,126Vitamin A Deficiency TestHuron14,060Vitamin A Deficiency TestSpearfish12,031Vitamin A Deficiency TestBox Elder11,527Vitamin A Deficiency TestVermillion11,506Vitamin A Deficiency TestBrandon10,745Vitamin A Deficiency TestRapid Valley7,875Vitamin A Deficiency TestSturgis7,088Vitamin A Deficiency TestHarrisburg6,645Vitamin A Deficiency TestMadison6,388Vitamin A Deficiency TestBelle Fourche5,561Vitamin A Deficiency TestTea5,535Vitamin A Deficiency TestDell Rapids3,940Vitamin A Deficiency TestDakota Dunes3,688Vitamin A Deficiency TestMilbank3,488Vitamin A Deficiency TestHot Springs3,407Vitamin A Deficiency TestHartford3,263Vitamin A Deficiency TestMobridge3,215Vitamin A Deficiency TestPine Ridge3,085Vitamin A Deficiency TestBlackhawk3,081Vitamin A Deficiency TestCanton3,054Vitamin A Deficiency TestLead2,989Vitamin A Deficiency TestNorth Sioux City2,956Vitamin A Deficiency TestWinner2,882Vitamin A Deficiency TestSummerset2,875Vitamin A Deficiency TestLennox2,617Vitamin A Deficiency TestSisseton2,433Vitamin A Deficiency TestFort Pierre2,426Vitamin A Deficiency TestColonial Pine Hills2,425Vitamin A Deficiency TestChamberlain2,400Vitamin A Deficiency TestBeresford2,359Vitamin A Deficiency TestFlandreau2,298Vitamin A Deficiency TestElk Point2,248Vitamin A Deficiency TestNorth Spearfish2,198Vitamin A Deficiency TestRedfield2,160Vitamin A Deficiency TestVolga2,146Vitamin A Deficiency TestSpringfield2,108Vitamin A Deficiency TestCuster2,067Vitamin A Deficiency TestRosebud1,994Vitamin A Deficiency TestWebster1,772Vitamin A Deficiency TestParkston1,761Vitamin A Deficiency TestNorth Eagle Butte1,731Vitamin A Deficiency TestFreeman1,711Vitamin A Deficiency TestGroton1,641Vitamin A Deficiency TestWagner1,533Vitamin A Deficiency TestGettysburg1,464Vitamin A Deficiency TestEagle Butte1,421Vitamin A Deficiency TestKyle1,398Vitamin A Deficiency TestClear Lake1,396Vitamin A Deficiency TestGarretson1,367Vitamin A Deficiency TestCrooks1,365Vitamin A Deficiency TestAurora1,339Vitamin A Deficiency TestMiller1,338Vitamin A Deficiency Test