Vitamin A Deficiency Test in California
This page explains the vitamin a deficiency test, what it measures, and how to arrange it. A vitamin A deficiency test measures the amount of vitamin A in your blood. It is ordered when a person has symptoms or risk factors that suggest low vitamin A, such as poor night vision, dry eyes, or difficulty seeing in dim light. It can also be used to monitor people with conditions that affect how the body absorbs fat and fat-soluble vitamins. California residents in Pacific can request the vitamin a deficiency test online and choose a convenient collection point.
- Sample type
- blood
- Category
- Vitamin & Mineral
- Turnaround
- 1-3 business days
- Price
- $116
- Referral
- Not required
A vitamin A deficiency test measures the amount of vitamin A in your blood. It is ordered when a person has symptoms or risk factors that suggest low vitamin A, such as poor night vision, dry eyes, or difficulty seeing in dim light. It can also be used to monitor people with conditions that affect how the body absorbs fat and fat-soluble vitamins.
What it measures
- Retinol — The main form of vitamin A circulating in the blood; this is the most common marker measured.
- Retinyl esters — A storage form of vitamin A; high levels may suggest too much vitamin A.
- Beta-carotene — A plant-based precursor that the body converts into vitamin A; sometimes measured to assess intake.
- Retinol-binding protein — A protein that carries vitamin A in the blood; low levels can occur with poor nutrition or liver problems.
Who it is for
A clinician may order this test for people with symptoms of vitamin A deficiency, such as night blindness or dry eyes, or for those with conditions that cause poor absorption of nutrients, including certain digestive disorders or a history of weight-loss surgery.
Preparation
No fasting is usually required for a vitamin A blood test. Tell your clinician about any supplements or medications you take, because they can affect the result.
Results and what they mean
Results are reported as a level of vitamin A in your blood, often in micrograms per deciliter. Your clinician interprets the result along with your symptoms, diet, and medical history. This information is general and not medical advice; discuss your results with a qualified healthcare professional.
Requesting the Vitamin A Deficiency Test in California
Order online, choose a certified collection site in California, and review results through a secure portal. No referral is required, and orders are processed confidentially. With coastal metros, inland towns, and rural counties with very different access to testing, it pays to schedule your collection in advance.
Frequently asked questions
Do I need to stop taking vitamin supplements before this test?
Ask your clinician. Some supplements can raise vitamin A levels, so they may want you to pause them before testing.
Is this test done fasting?
Fasting is not typically required, but follow any instructions your clinician gives you.
How long does it take to get results?
Results are usually available within 1 to 3 business days after the blood sample is collected.
Can I test myself at home?
No, this test requires a blood draw and laboratory analysis. It is ordered and interpreted by a healthcare professional.
Vitamin A Deficiency Test by city in California
- Vitamin A Deficiency Test in Los Angeles
- Vitamin A Deficiency Test in San Francisco
- Vitamin A Deficiency Test in San Diego
- Vitamin A Deficiency Test in Riverside
- Vitamin A Deficiency Test in Sacramento
- Vitamin A Deficiency Test in San Jose
- Vitamin A Deficiency Test in Fresno
- Vitamin A Deficiency Test in Concord
- Vitamin A Deficiency Test in Bakersfield
- Vitamin A Deficiency Test in Mission Viejo
- Vitamin A Deficiency Test in Murrieta
- Vitamin A Deficiency Test in Long Beach
- Vitamin A Deficiency Test in Oakland
- Vitamin A Deficiency Test in Stockton
- Vitamin A Deficiency Test in Victorville
- Vitamin A Deficiency Test in Modesto
- Vitamin A Deficiency Test in Lancaster
- Vitamin A Deficiency Test in Oxnard
- Vitamin A Deficiency Test in Indio
- Vitamin A Deficiency Test in Anaheim
- Vitamin A Deficiency Test in Antioch
- Vitamin A Deficiency Test in Santa Rosa
- Vitamin A Deficiency Test in Santa Ana
- Vitamin A Deficiency Test in Irvine
- Vitamin A Deficiency Test in Santa Clarita
- Vitamin A Deficiency Test in Chula Vista
- Vitamin A Deficiency Test in Visalia
- Vitamin A Deficiency Test in Fremont
- Vitamin A Deficiency Test in San Bernardino
- Vitamin A Deficiency Test in Thousand Oaks
- Vitamin A Deficiency Test in Moreno Valley
- Vitamin A Deficiency Test in Fontana
- Vitamin A Deficiency Test in Salinas
- Vitamin A Deficiency Test in Huntington Beach
- Vitamin A Deficiency Test in Santa Barbara
- Vitamin A Deficiency Test in Glendale
- Vitamin A Deficiency Test in Hemet
- Vitamin A Deficiency Test in Vallejo
- Vitamin A Deficiency Test in Elk Grove
- Vitamin A Deficiency Test in Ontario
All testing in California → Full Vitamin A Deficiency Test guide →