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At-home vitamin deficiency tests are available from online retailers, including LetsGetChecked, Everlywell, MyLab Box, and more. Popular test kits can measure a person’s vitamin D, B12, or iron levels.

Vitamins and minerals are micronutrients that support many crucial body functions. At-home vitamin deficiency tests can check for deficiencies, but a person should only make health decisions based on their results with input from a doctor.

Medical News Today’s methodology

MNT chooses at-home tests that meet the following criteria when possible:

  • Laboratories: When possible, MNT will choose companies that process test samples in CLIA-certified labs. This means they follow state and federal regulations.
  • Budget: MNT chooses at-home tests that are suitable for a wide range of budgets.
  • Privacy: MNT includes companies that offer robust and transparent privacy measures, such as data protection and discreet packaging.
  • Test result speed: MNT selects companies that inform customers when they will receive their test results and whether they will receive them via email, app, or phone.
  • Further support: MNT will indicate whether a company offers further support, such as a follow-up phone consultation with a doctor to discuss test results.

Medical News Today follows a strict product selection and vetting process. Learn more here.

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Please note that the writer of this article has not tried these products. All information presented is purely research-based and correct at the time of publication.

A Medical News Today Editor, Lois Zoppi, provided the quotes in this article. They received a free Essential Vitamins test from LetsGetChecked to review.

The table below compares each vitamin deficiency test in this article for collection method, price, result turnaround time, and more.

Products Number of vitamins and mineralsCollection methodResults delivery methodTime to receive results after submissionPrice
Micronutrient Test
7finger-prickonline portal2–5 days$179
Everlywell1finger-prickonline portal2–5 days$99
myLAB Box1finger-prickonline portal1–5 days$89
Essential Vitamin Test
3finger-prickonline portal2–5 days$110
Labcorp3blood sampleonline portalup to 2 weeks$159

A person interested in seeing if they may have a vitamin deficiency can purchase a home-testing kit to check for possible deficiencies. However, it is important to consider the pros and cons of these services.


  • The test kits are convenient.
  • The results are confidential.
  • The test kits are easy to use.
  • Tests often come in discrete packaging.
  • The tests include complete instructions for providing a sample.
  • A person can get their results quickly with certain companies.


  • People may still have to contact a doctor if the results show a deficiency.
  • People may have to contact a doctor if they have symptoms but a negative test result.
  • At-home tests can be expensive, and going directly through a lab may be more cost-effective.
  • It can take up to 2 weeks to get results.
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People may wish to consider these factors before buying a test online:

  • The nutrients tested: Many companies offer comprehensive panels that test for several vitamins and minerals. However, some tests only check the levels of certain vitamins. A person should pick the test that best suits their needs.
  • The collection method: Anyone uncomfortable drawing a finger-prick blood sample may prefer a test that relies on a saliva sample instead. However, many vitamin and mineral tests require a blood test.
  • Fasting: Some tests require a person to fast before taking a sample. A person should check the fasting period before taking the test. They may also require people to stop taking certain supplements for a few days before collecting a sample.
  • The timing of results: Some tests have shorter turnaround times, but these may be more expensive.
  • Price: Different at-home vitamin deficiency tests fit different budgets. Those that test for a wider range of vitamins may cost more.

When a person develops a nutritional deficiency, the body may produce symptoms, some of which can go unnoticed. Though an at-home test should not substitute for a doctor’s or registered dietitian’s advice, it may indicate missing nutrients in a person’s diet.

Although the Dietary Guidelines for Americans 2020–2025 indicate that a person must aim to meet their vitamin and mineral needs through their diet, sometimes they may need a multivitamin to supplement their intake.

The Centers for Disease Control and Prevention (CDC) lists several of the most common deficiencies in the United States. These include:

Learn more about vitamins and how they work.

High-risk groups

A 2019 research review showed specific groups of people with a higher risk of developing vitamin or mineral deficiencies. The groups included:

  • undernourished people
  • older adults
  • pregnant people
  • adolescents
  • young children

The researchers write that addressing these deficiencies should include improved, more diverse diets, and supplementation.

The FDA states that at-home tests can effectively detect health conditions and monitor existing ones. However, it warns people should not replace doctor’s appointments with at-home tests.

The most reputable companies selling at-home tests send customers’ samples to CLIA-certified labs. These are the labs that hospitals and doctor’s offices use, which may suggest the sample analysis will be as accurate as it is for tests people will get from a doctor.

However, people risk making mistakes or contaminating their samples when they collect them at home. Those uncomfortable collecting their own sample may wish to visit an in-person testing center.

If a test shows that a person has a vitamin deficiency, it is important that they contact a doctor. A person may also wish to inform a doctor if their test does not show a particular deficiency.

If a person receives treatment from a doctor, they may wish to conduct the test again after their treatment ends to see how their vitamin levels change.

A person should consult a doctor before making health decisions based on the results of an at-home test.

Regardless of the results of an at-home vitamin deficiency test, a person should consider consulting a doctor. If their results are positive for a deficiency, a doctor will likely double-check them, run other appropriate tests when needed, and help diagnose any underlying cause before setting out a treatment plan.

If an individual’s results are negative but they are still experiencing symptoms of a vitamin or mineral deficiency, a doctor may carry out further tests to diagnose any underlying conditions.

A person should not treat a vitamin or mineral deficiency without discussing it with a doctor.

Below, we answer some of the top frequently asked questions about vitamin deficiency tests.

How do you test for vitamin deficiencies?

People can test for vitamin deficiencies with at-home tests such as those from Everlywell and LetsGetChecked. People can also get a vitamin deficiency test from a doctor. The tests will usually involve taking a blood sample.

How can I get my vitamin levels checked?

A person can speak to a doctor or order an at-home vitamin deficiency test from companies such as LetsGetChecked, Everlywell, or MyLabBox to get their vitamin levels checked.

Can I ask my doctor for a vitamin deficiency test?

Yes, a doctor can offer vitamin deficiency testing if they think it is medically necessary.

Are at-home vitamin deficiency tests accurate?

The accuracy of a vitamin deficiency test depends on the company, the sample collection, and various procedures. If the company designs its devices in line with medical guidelines and people take their samples correctly, the test results may be accurate.

The Food and Drug Administration has a list of approved at-home tests, and anyone concerned about accuracy may prefer to use one.

To help ensure accuracy, carefully follow the instructions about taking, storing, and sending off samples.

How can I tell if I have a vitamin deficiency?

The specific symptoms of a vitamin deficiency will depend on which vitamin deficiency a person has.

For example, a vitamin C deficiency can cause dental problems, bone fractures, dry eyes, and hair loss. An iron deficiency can cause fatigue, while a lack of vitamin D can be responsible for muscle twitches, fatigue, and osteoporosis.

A person should speak with a doctor about their symptoms before getting a vitamin deficiency test.

At-home vitamin deficiency tests check levels of vitamins and minerals in a blood or saliva sample. They are generally convenient, but they can be expensive.

Anyone concerned about a deficiency should consider consulting a doctor, especially if a test returns a positive result. The doctor can check for underlying health conditions, perform further tests, and offer treatment if needed.