Vitamin C, also called ascorbic acid, is an essential nutrient that supports the immune system, helps heal wounds, and keeps skin, blood vessels, and gums healthy. The body cannot make it, so it must come from food. The vitamin C blood test measures the level of this vitamin in your blood. It helps doctors check for a deficiency, which can cause tiredness, easy bruising, and gum problems.

Before the Test

Your doctor may ask you to avoid vitamin C supplements for a short time before the test.

Tell your doctor about all supplements and your usual diet.

Follow any fasting instructions given by the lab.

During the Test

A trained Orange Health Labs professional will collect your sample during the visit.

Follow the instructions given to you at the time of collection.

The sample is labelled and sent to the laboratory for testing.

Let the collection team know if you feel unwell during the procedure.

It is recommended:

To look for vitamin C deficiency in people with poor diet or absorption problems.

To investigate tiredness, easy bruising, bleeding gums, or slow wound healing.

To check nutrition in people with long-term illness.

To monitor the response to vitamin C treatment.

When a deficiency is suspected. Often done in the morning, as your doctor advises.