A vitamin C blood test helps assess your vitamin C level, which plays a key role in maintaining healthy immunity, collagen production and iron absorption. Individuals at possible risk for vitamin C deficiency include those with restrictive or limited diets or who have certain conditions that interfere with normal digestion such as inflammatory bowel disease, celiac disease, cystic fibrosis, or previous bariatric surgery.

For those experiencing low vitamin C symptoms such as fatigue, weakened immunity and slow wound healing, testing can help you find out your vitamin C level to support your health.

This test can also identify vitamin C excess in your body.

The best ways to prevent vitamin C deficiency and to improve your vitamin C level are by eating a well-balanced diet and incorporating foods high in vitamin C.

Recommendations based on the Dietary Guidelines for Americans include:

• Eating a variety of vegetables, fruits, whole grains, fat-free and low-fat milk, yogurt, cheese, and oils. Citrus fruits, fruit juices, and many vegetables are excellent sources of vitamin C.
• Eating a variety of proteins such as lean meats, poultry, eggs, seafood, beans, peas, lentils, nuts, seeds, and soy products.
• Limiting foods and beverages higher in added sugars, saturated fat, and sodium.
• Limiting alcoholic beverages.

If dietary changes are not sufficient, or if you have increased needs, a vitamin C supplement may be recommended by your healthcare provider. It’s important to consult with your provider before determining if supplementation is necessary, as too much vitamin C can also have negative health effects.

Your testing will be performed in a CLIA-certified clinical laboratory. Labcorp provides leading-edge medical laboratory tests and services through a national network of primary clinical laboratories and specialty testing laboratories. Our labs perform regular quality assurance testing to ensure our results are accurate.

Your results will be provided to you through our secure online portal to view or print. Results are also made available through a secure portal to the independent healthcare provider who placed your test order.  If you are accessing your results through your Labcorp Patient™ account, all users linked to the account will have access to all OnDemand test results. Results may also be provided to a local, state, and/or federal health authority; for example, many states require the testing laboratory and physician to report test results for certain communicable diseases, such as COVID-19, to local or state health departments.

If you have questions or comments regarding the Labcorp Notice of Privacy Practices, or have a complaint about our use or disclosure of your PHI or our privacy practices, please contact: privacyofficer@labcorp.com, call us at (877) 234-4722 (877-23-HIPAA) and ask for the Labcorp HIPAA Privacy Officer, or send a written request to: HIPAA Privacy Officer, Labcorp, 531 South Spring Street, Burlington, NC 27215. You also may file a complaint with the Secretary of the U.S. Department of Health and Human Services.

Visit the Labcorp OnDemand® website to browse and purchase laboratory tests and create your Labcorp Patient™ account to view your results. All Labcorp OnDemand testing requires an order from an authorized healthcare professional. For your convenience, Labcorp OnDemand has contracted with independent professional entities (collectively, Providers) to deliver healthcare provider services. Visit a Labcorp location for sample collection; or, if using an at-home collection kit, collect your sample yourself. We’ll let you know when your results are ready and can be accessed through your Labcorp Patient™ account.