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Mountain West · Vitamin A Deficiency Test

Vitamin A Deficiency Test in Montana

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 Montana

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

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

Billings124,973Vitamin A Deficiency TestMissoula92,863Vitamin A Deficiency TestGreat Falls62,112Vitamin A Deficiency TestBozeman51,574Vitamin A Deficiency TestButte34,368Vitamin A Deficiency TestHelena32,060Vitamin A Deficiency TestKalispell24,260Vitamin A Deficiency TestBelgrade10,555Vitamin A Deficiency TestHavre9,417Vitamin A Deficiency TestAnaconda9,380Vitamin A Deficiency TestHelena Valley Southeast9,316Vitamin A Deficiency TestHelena Valley West Central8,550Vitamin A Deficiency TestMiles City8,441Vitamin A Deficiency TestLivingston8,110Vitamin A Deficiency TestEvergreen7,988Vitamin A Deficiency TestWhitefish7,783Vitamin A Deficiency TestLaurel7,164Vitamin A Deficiency TestLockwood7,162Vitamin A Deficiency TestSidney6,240Vitamin A Deficiency TestLewistown5,967Vitamin A Deficiency TestFour Corners5,649Vitamin A Deficiency TestColumbia Falls5,304Vitamin A Deficiency TestOrchard Homes5,170Vitamin A Deficiency TestPolson5,161Vitamin A Deficiency TestGlendive4,928Vitamin A Deficiency TestBigfork4,683Vitamin A Deficiency TestHelena Valley Northwest4,653Vitamin A Deficiency TestHamilton4,632Vitamin A Deficiency TestLolo4,338Vitamin A Deficiency TestMalmstrom AFB4,098Vitamin A Deficiency TestDillon3,930Vitamin A Deficiency TestHardin3,754Vitamin A Deficiency TestHelena Valley Northeast3,607Vitamin A Deficiency TestNorth Browning3,253Vitamin A Deficiency TestGlasgow3,192Vitamin A Deficiency TestBig Sky3,141Vitamin A Deficiency TestShelby3,139Vitamin A Deficiency TestCut Bank3,049Vitamin A Deficiency TestDeer Lodge2,938Vitamin A Deficiency TestConrad2,758Vitamin A Deficiency TestLibby2,745Vitamin A Deficiency TestMontana City2,735Vitamin A Deficiency TestWolf Point2,638Vitamin A Deficiency TestLakeside2,463Vitamin A Deficiency TestLame Deer2,231Vitamin A Deficiency TestTownsend2,224Vitamin A Deficiency TestEast Missoula2,162Vitamin A Deficiency TestColstrip2,094Vitamin A Deficiency TestThree Forks2,084Vitamin A Deficiency TestColumbus2,069Vitamin A Deficiency TestPablo2,037Vitamin A Deficiency TestRed Lodge2,032Vitamin A Deficiency TestMalta2,031Vitamin A Deficiency TestCrow Agency1,993Vitamin A Deficiency TestStevensville1,959Vitamin A Deficiency TestKing Arthur Park1,951Vitamin A Deficiency TestClancy1,902Vitamin A Deficiency TestManhattan1,884Vitamin A Deficiency TestWest Glendive1,868Vitamin A Deficiency TestChoteau1,826Vitamin A Deficiency Test