Lab test requirements · preparation, ID, referral, and timing United States · 0 communities
LabRequirements Know what your test requires

New England · Vitamin A Deficiency Test

Vitamin A Deficiency Test in Connecticut

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 Connecticut

Here is what you need before ordering and completing the Vitamin A Deficiency Test in CT. 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 Connecticut communities

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

Bridgeport975,078Vitamin A Deficiency TestHartford907,046Vitamin A Deficiency TestNew Haven587,648Vitamin A Deficiency TestNorwich201,726Vitamin A Deficiency TestWaterbury199,552Vitamin A Deficiency TestDanbury177,722Vitamin A Deficiency TestStamford134,820Vitamin A Deficiency TestNorwalk90,821Vitamin A Deficiency TestNew Britain74,022Vitamin A Deficiency TestMeriden60,790Vitamin A Deficiency TestBristol60,733Vitamin A Deficiency TestWest Haven55,518Vitamin A Deficiency TestMilford city 50,694Vitamin A Deficiency TestMiddletown47,164Vitamin A Deficiency TestShelton40,944Vitamin A Deficiency TestTorrington35,447Vitamin A Deficiency TestNaugatuck31,586Vitamin A Deficiency TestNew London27,585Vitamin A Deficiency TestWallingford Center19,211Vitamin A Deficiency TestAnsonia18,945Vitamin A Deficiency TestWillimantic18,150Vitamin A Deficiency TestStorrs16,784Vitamin A Deficiency TestDerby12,387Vitamin A Deficiency TestTrumbull Center10,468Vitamin A Deficiency TestKensington9,626Vitamin A Deficiency TestOakville9,507Vitamin A Deficiency TestConning Towers Nautilus Park9,479Vitamin A Deficiency TestSandy Hook9,406Vitamin A Deficiency TestRiverside9,133Vitamin A Deficiency TestLong Hill8,307Vitamin A Deficiency TestGlastonbury Center8,187Vitamin A Deficiency TestThompsonville8,134Vitamin A Deficiency TestSouthwood Acres7,875Vitamin A Deficiency TestRockville7,612Vitamin A Deficiency TestNew Canaan7,399Vitamin A Deficiency TestStaples7,125Vitamin A Deficiency TestCos Cob7,089Vitamin A Deficiency TestOld Greenwich6,929Vitamin A Deficiency TestWinsted6,662Vitamin A Deficiency TestNorthford6,117Vitamin A Deficiency TestSimsbury Center6,072Vitamin A Deficiency TestHazardville6,070Vitamin A Deficiency TestCheshire Village6,006Vitamin A Deficiency TestBranford Center5,934Vitamin A Deficiency TestDaniels Farm5,764Vitamin A Deficiency TestSherwood Manor5,710Vitamin A Deficiency TestNoroton5,682Vitamin A Deficiency TestPawcatuck5,383Vitamin A Deficiency TestLake Pocotopaug5,124Vitamin A Deficiency TestTerryville5,110Vitamin A Deficiency TestByram4,994Vitamin A Deficiency TestLong Hill4,645Vitamin A Deficiency TestQuinnipiac University4,614Vitamin A Deficiency TestStafford Springs4,611Vitamin A Deficiency TestMystic4,354Vitamin A Deficiency TestEast Village4,250Vitamin A Deficiency TestHeritage Village4,232Vitamin A Deficiency TestDanielson4,146Vitamin A Deficiency TestBroad Brook4,145Vitamin A Deficiency TestOronoque3,790Vitamin A Deficiency Test