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At-home vitamin deficiency tests are available from retailers like LetsGetChecked and Everlywell. They provide quick, confidential results online. Some include consultations if levels fall outside typical ranges. Read our hands-on review.

For any further questions, all reputable at-home tests will have instructions and a customer care line.

Most vitamin deficiency tests require a blood sample. The company should send all necessary equipment, including a lancet, in the original package.

People will likely need to fill in a form detailing personal information. Then, they should use the lancet to collect a sample of blood.

The company should provide a return envelope with pre-paid shipping. When a person takes their sample, they should send the envelope off.

People will receive their results soon after, typically within one week of the lab receiving the samples. Depending on the company a person uses, they may need to log in or use an app to view their results.

Some companies may offer follow-up advice. Others may suggest contacting a healthcare professional for help interpreting the results.

Medical News Today has tested some of the products below. Reviewers may have received some products from the manufacturers for free, which does not influence their review. All opinions are the reviewers’ own.

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
LetsGetChecked
Micronutrient Test
7finger prickonline portal2–5 days$179
LetsGetChecked
Essential Vitamin Test
3finger prickonline portal2–5 days$110
Everlywell1finger prickonline portal2–5 days$99
myLAB Box1finger prickonline portal1–5 days$89
Labcorp3blood sampleonline portalup to 2 weeks$159

Medical News Today chooses at-home vitamin tests that meet the following criteria when possible:

  • Deficiencies: We include tests that screen for multiple deficiencies, which can save money compared to individual vitamin tests.
  • Results time: Companies will return the results within one week of receiving the sample.
  • Further support: Where applicable, we will choose companies that are clear about the kind of follow-up support they offer.
  • Laboratories: When possible, we will choose companies that process test samples in CLIA certified labs. This means they follow state and federal regulations.
  • Privacy: We includes companies that offer robust and transparent privacy measures, such as data protection and discreet packaging.

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

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People may wish to consider these factors before buying a test online:

  • The nutrients tested: Many companies offer comprehensive panels testing 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.

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

For example, a vitamin C deficiency can cause:

An iron deficiency can cause fatigue, while a lack of vitamin D can be responsible for:

Vitamin tests screen the levels of vitamins and nutrients in the blood. In-person tests will likely require a healthcare professional to draw the blood using a needle. At-home tests will provide a lancet for people to collect their own samples.

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

The Food and Drug Administration (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 sample may wish to visit an in-person testing center.

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.

If a test shows that a person has a vitamin deficiency, they must 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.

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

People can test for vitamin deficiencies with at-home tests like 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.

Yes, vitamin tests require a blood sample to check for vitamin deficiency.

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

If a person shows any signs of a vitamin deficiency, such as fatigue, depression, or dry, brittle hair, they should contact a doctor.

A doctor may order a test to check vitamin levels.

A complete blood count (CBC) can detect certain deficiencies, such as an iron and vitamin B12 deficiency.

Yes. Tests such as those from Labcorp and LetsGetChecked will show if a person has a vitamin B12 by testing their levels in their blood. This is done with a finger prick or a blood sample.

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.