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South · Carnitine Level Testing – Deficiency Test

Carnitine Level Testing – Deficiency Test in North Carolina

Below is a plain-language overview of the carnitine level testing – deficiency test. Carnitine level testing measures the amount of carnitine in the body to help evaluate certain muscle disorders and metabolic concerns. Carnitine is needed for the body to use specific fats for energy.

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 Carnitine Level Testing – Deficiency Test 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 can vary, so follow the collection lab's instructions carefully. This may include fasting for a period before the sample is taken or avoiding certain foods or supplements.
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 test measures carnitine levels, typically in the blood, to check for a deficiency. Carnitine helps transport certain fats into cells so they can be used for energy. A deficiency can interfere with normal muscle function and fat metabolism.

What it measures

  • Total carnitine — reflects the overall amount of carnitine in the sample
  • Free carnitine — reflects the unbound form available for fat transport
  • Acylcarnitine — reflects carnitine bound to fatty acids
  • Acylcarnitine-to-free carnitine ratio — helps indicate how well carnitine is being used

What the test involves

A healthcare professional collects a blood sample, usually from a vein in the arm, using a standard blood draw. In some cases, a urine sample may also be collected depending on the lab's instructions.

Why it is often ordered

A clinician may order this test when a person has unexplained muscle weakness, fatigue, or other symptoms that could relate to how the body processes fats. It can also be used to monitor known metabolic conditions or the effects of certain treatments.

Preparation

Preparation can vary, so follow the collection lab's instructions carefully. This may include fasting for a period before the sample is taken or avoiding certain foods or supplements.

How results are reported

Results are reported as a numerical value for carnitine, often alongside a reference range. Reference ranges differ between laboratories, so results should always be interpreted in the context of the lab that performed the test.

Before you go

  • Whether fasting or other preparation is required before the sample collection
  • What type of sample will be collected, such as blood or urine
  • How and when results will be shared with you or your healthcare provider

Cities

Carnitine Level Testing – Deficiency Test in North Carolina communities

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

Charlotte1,516,107Carnitine Level Testing – Deficiency TestRaleigh1,062,018Carnitine Level Testing – Deficiency TestWinston-Salem420,400Carnitine Level Testing – Deficiency TestDurham399,762Carnitine Level Testing – Deficiency TestGreensboro345,270Carnitine Level Testing – Deficiency TestFayetteville328,827Carnitine Level Testing – Deficiency TestAsheville316,694Carnitine Level Testing – Deficiency TestConcord264,492Carnitine Level Testing – Deficiency TestWilmington247,372Carnitine Level Testing – Deficiency TestHickory211,042Carnitine Level Testing – Deficiency TestGastonia194,190Carnitine Level Testing – Deficiency TestHigh Point178,800Carnitine Level Testing – Deficiency TestCary171,603Carnitine Level Testing – Deficiency TestBurlington137,096Carnitine Level Testing – Deficiency TestGreenville122,921Carnitine Level Testing – Deficiency TestJacksonville108,549Carnitine Level Testing – Deficiency TestRocky Mount61,952Carnitine Level Testing – Deficiency TestChapel Hill60,920Carnitine Level Testing – Deficiency TestHuntersville60,166Carnitine Level Testing – Deficiency TestApex58,066Carnitine Level Testing – Deficiency TestKannapolis52,173Carnitine Level Testing – Deficiency TestMooresville48,431Carnitine Level Testing – Deficiency TestWilson47,914Carnitine Level Testing – Deficiency TestWake Forest46,387Carnitine Level Testing – Deficiency TestHolly Springs40,198Carnitine Level Testing – Deficiency TestIndian Trail39,603Carnitine Level Testing – Deficiency TestSalisbury35,258Carnitine Level Testing – Deficiency TestMonroe34,464Carnitine Level Testing – Deficiency TestGoldsboro33,214Carnitine Level Testing – Deficiency TestFuquay-Varina33,135Carnitine Level Testing – Deficiency TestNew Bern31,058Carnitine Level Testing – Deficiency TestCornelius30,925Carnitine Level Testing – Deficiency TestGarner30,859Carnitine Level Testing – Deficiency TestSanford30,024Carnitine Level Testing – Deficiency TestMatthews29,417Carnitine Level Testing – Deficiency TestMorrisville28,824Carnitine Level Testing – Deficiency TestStatesville27,777Carnitine Level Testing – Deficiency TestThomasville26,941Carnitine Level Testing – Deficiency TestAsheboro26,729Carnitine Level Testing – Deficiency TestKernersville26,376Carnitine Level Testing – Deficiency TestMint Hill26,236Carnitine Level Testing – Deficiency TestClayton25,486Carnitine Level Testing – Deficiency TestLeland22,794Carnitine Level Testing – Deficiency TestShelby21,564Carnitine Level Testing – Deficiency TestCarrboro21,237Carnitine Level Testing – Deficiency TestClemmons21,032Carnitine Level Testing – Deficiency TestKinston19,888Carnitine Level Testing – Deficiency TestWaxhaw19,645Carnitine Level Testing – Deficiency TestLexington19,347Carnitine Level Testing – Deficiency TestLumberton19,186Carnitine Level Testing – Deficiency TestKnightdale18,614Carnitine Level Testing – Deficiency TestElizabeth City18,466Carnitine Level Testing – Deficiency TestHarrisburg18,415Carnitine Level Testing – Deficiency TestLenoir18,205Carnitine Level Testing – Deficiency TestBoone18,055Carnitine Level Testing – Deficiency TestHavelock17,570Carnitine Level Testing – Deficiency TestHope Mills17,421Carnitine Level Testing – Deficiency TestMorganton17,389Carnitine Level Testing – Deficiency TestMount Holly17,315Carnitine Level Testing – Deficiency TestPinehurst17,250Carnitine Level Testing – Deficiency Test