Lab test requirements · preparation, ID, referral, and timing United States · 0 communities
LabRequirements Know what your test requires

South · Vitamin C Test – Vitamin Deficiency Testing

Vitamin C Test – Vitamin Deficiency Testing in North Carolina

Below is a plain-language overview of the vitamin c test – vitamin deficiency testing. A vitamin C test measures the amount of vitamin C in your blood to help evaluate whether your levels are adequate. It is typically used when a deficiency is suspected based on symptoms or dietary history.

Sample typeBlood and/or urine at a collection lab
ReferralIncluded — no referral from your own doctor needed

Lab requirements in North Carolina

Here is what you need before ordering and completing the Vitamin C Test – Vitamin Deficiency Testing in NC. Review each item and confirm the details with the collection lab.

Physician's order
Included. A physician's order is required for lab testing and is provided for you by our partner's physicians — no referral from your own doctor is needed.
Fasting
Fasting is required for this test — follow the collection lab's instructions.
Preparation
Preparation instructions can vary, so follow the specific directions provided by the collection laboratory. This may include fasting or avoiding certain foods or supplements before the test.
Sample & visit
A blood and/or urine sample is collected; the visit usually takes about 10 minutes.
Identification
Bring the lab requisition form from your account. The collection lab may also ask for a government-issued photo ID.
Turnaround
1-3 business days
Availability
Our partner lab does not serve ND, RI, NY, NJ, MD or HI. Confirm availability for your location with the collection lab.

Before you go

  • Order your test before visiting a lab, then use the requisition form in your account.
  • Print the requisition form, or fax it to the lab directly from your account.
  • No scheduling is needed — visit the collection lab during its normal business hours.
  • A blood and/or urine sample is collected; the visit usually takes about 10 minutes.
  • Bring a government-issued photo ID in case the lab requests it.
  • Results are posted to your secure account within 1–3 business days.

Requirements are summarized from our partner lab's published policies. Preparation and availability can change — confirm current instructions with the collection lab before your visit.

What this test is

This blood test quantifies the concentration of vitamin C, also known as ascorbic acid, in your bloodstream. It is used to assess vitamin C status and can help identify a deficiency. The test is not a routine screening tool for most healthy individuals.

What it measures

  • Vitamin C (ascorbic acid) — reflects the amount of vitamin C circulating in the blood

What the test involves

The test requires a standard blood draw, usually from a vein in your arm. The sample is then sent to a laboratory for analysis.

Why it is often ordered

A clinician may order this test if you have symptoms that could suggest a vitamin C deficiency, such as easy bruising, bleeding gums, or poor wound healing. It may also be ordered for individuals with limited dietary intake or certain medical conditions that affect nutrient absorption.

Preparation

Preparation instructions can vary, so follow the specific directions provided by the collection laboratory. This may include fasting or avoiding certain foods or supplements before the test.

How results are reported

Results are reported as a numerical value that indicates your vitamin C level. Reference ranges can differ between laboratories, so your result should be interpreted in the context of the range provided by the testing lab.

Before you go

  • Whether fasting is required before the test
  • Any medications or supplements that might affect results
  • The specific reference range used by the testing laboratory

Cities

Vitamin C Test – Vitamin Deficiency Testing in North Carolina communities

Choose your city for local context and to order this test.

Charlotte1,516,107Vitamin C Test – Vitamin Deficiency TestingRaleigh1,062,018Vitamin C Test – Vitamin Deficiency TestingWinston-Salem420,400Vitamin C Test – Vitamin Deficiency TestingDurham399,762Vitamin C Test – Vitamin Deficiency TestingGreensboro345,270Vitamin C Test – Vitamin Deficiency TestingFayetteville328,827Vitamin C Test – Vitamin Deficiency TestingAsheville316,694Vitamin C Test – Vitamin Deficiency TestingConcord264,492Vitamin C Test – Vitamin Deficiency TestingWilmington247,372Vitamin C Test – Vitamin Deficiency TestingHickory211,042Vitamin C Test – Vitamin Deficiency TestingGastonia194,190Vitamin C Test – Vitamin Deficiency TestingHigh Point178,800Vitamin C Test – Vitamin Deficiency TestingCary171,603Vitamin C Test – Vitamin Deficiency TestingBurlington137,096Vitamin C Test – Vitamin Deficiency TestingGreenville122,921Vitamin C Test – Vitamin Deficiency TestingJacksonville108,549Vitamin C Test – Vitamin Deficiency TestingRocky Mount61,952Vitamin C Test – Vitamin Deficiency TestingChapel Hill60,920Vitamin C Test – Vitamin Deficiency TestingHuntersville60,166Vitamin C Test – Vitamin Deficiency TestingApex58,066Vitamin C Test – Vitamin Deficiency TestingKannapolis52,173Vitamin C Test – Vitamin Deficiency TestingMooresville48,431Vitamin C Test – Vitamin Deficiency TestingWilson47,914Vitamin C Test – Vitamin Deficiency TestingWake Forest46,387Vitamin C Test – Vitamin Deficiency TestingHolly Springs40,198Vitamin C Test – Vitamin Deficiency TestingIndian Trail39,603Vitamin C Test – Vitamin Deficiency TestingSalisbury35,258Vitamin C Test – Vitamin Deficiency TestingMonroe34,464Vitamin C Test – Vitamin Deficiency TestingGoldsboro33,214Vitamin C Test – Vitamin Deficiency TestingFuquay-Varina33,135Vitamin C Test – Vitamin Deficiency TestingNew Bern31,058Vitamin C Test – Vitamin Deficiency TestingCornelius30,925Vitamin C Test – Vitamin Deficiency TestingGarner30,859Vitamin C Test – Vitamin Deficiency TestingSanford30,024Vitamin C Test – Vitamin Deficiency TestingMatthews29,417Vitamin C Test – Vitamin Deficiency TestingMorrisville28,824Vitamin C Test – Vitamin Deficiency TestingStatesville27,777Vitamin C Test – Vitamin Deficiency TestingThomasville26,941Vitamin C Test – Vitamin Deficiency TestingAsheboro26,729Vitamin C Test – Vitamin Deficiency TestingKernersville26,376Vitamin C Test – Vitamin Deficiency TestingMint Hill26,236Vitamin C Test – Vitamin Deficiency TestingClayton25,486Vitamin C Test – Vitamin Deficiency TestingLeland22,794Vitamin C Test – Vitamin Deficiency TestingShelby21,564Vitamin C Test – Vitamin Deficiency TestingCarrboro21,237Vitamin C Test – Vitamin Deficiency TestingClemmons21,032Vitamin C Test – Vitamin Deficiency TestingKinston19,888Vitamin C Test – Vitamin Deficiency TestingWaxhaw19,645Vitamin C Test – Vitamin Deficiency TestingLexington19,347Vitamin C Test – Vitamin Deficiency TestingLumberton19,186Vitamin C Test – Vitamin Deficiency TestingKnightdale18,614Vitamin C Test – Vitamin Deficiency TestingElizabeth City18,466Vitamin C Test – Vitamin Deficiency TestingHarrisburg18,415Vitamin C Test – Vitamin Deficiency TestingLenoir18,205Vitamin C Test – Vitamin Deficiency TestingBoone18,055Vitamin C Test – Vitamin Deficiency TestingHavelock17,570Vitamin C Test – Vitamin Deficiency TestingHope Mills17,421Vitamin C Test – Vitamin Deficiency TestingMorganton17,389Vitamin C Test – Vitamin Deficiency TestingMount Holly17,315Vitamin C Test – Vitamin Deficiency TestingPinehurst17,250Vitamin C Test – Vitamin Deficiency Testing