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New England · Carnitine Level Testing – Deficiency Test

Carnitine Level Testing – Deficiency Test in Massachusetts

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 Massachusetts

Here is what you need before ordering and completing the Carnitine Level Testing – Deficiency Test in MA. 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 Massachusetts communities

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

Boston4,208,580Carnitine Level Testing – Deficiency TestSpringfield620,494Carnitine Level Testing – Deficiency TestWorcester573,573Carnitine Level Testing – Deficiency TestNew Bedford158,353Carnitine Level Testing – Deficiency TestLeominster118,190Carnitine Level Testing – Deficiency TestCambridge116,892Carnitine Level Testing – Deficiency TestLowell114,804Carnitine Level Testing – Deficiency TestBrockton104,216Carnitine Level Testing – Deficiency TestQuincy100,544Carnitine Level Testing – Deficiency TestLynn100,233Carnitine Level Testing – Deficiency TestFall River93,339Carnitine Level Testing – Deficiency TestNewton88,647Carnitine Level Testing – Deficiency TestLawrence87,798Carnitine Level Testing – Deficiency TestSomerville80,608Carnitine Level Testing – Deficiency TestFramingham72,089Carnitine Level Testing – Deficiency TestHaverhill67,093Carnitine Level Testing – Deficiency TestMalden65,602Carnitine Level Testing – Deficiency TestWaltham64,655Carnitine Level Testing – Deficiency TestRevere60,720Carnitine Level Testing – Deficiency TestMedford60,708Carnitine Level Testing – Deficiency TestTaunton59,076Carnitine Level Testing – Deficiency TestChicopee55,636Carnitine Level Testing – Deficiency TestPeabody54,200Carnitine Level Testing – Deficiency TestMethuen Town52,536Carnitine Level Testing – Deficiency TestEverett48,368Carnitine Level Testing – Deficiency TestAttleboro46,146Carnitine Level Testing – Deficiency TestSalem44,452Carnitine Level Testing – Deficiency TestPittsfield43,890Carnitine Level Testing – Deficiency TestBeverly42,448Carnitine Level Testing – Deficiency TestFitchburg41,796Carnitine Level Testing – Deficiency TestMarlborough41,505Carnitine Level Testing – Deficiency TestWoburn40,967Carnitine Level Testing – Deficiency TestWestfield40,922Carnitine Level Testing – Deficiency TestChelsea40,025Carnitine Level Testing – Deficiency TestHolyoke38,480Carnitine Level Testing – Deficiency TestWatertown Town35,171Carnitine Level Testing – Deficiency TestGloucester29,814Carnitine Level Testing – Deficiency TestMelrose29,567Carnitine Level Testing – Deficiency TestNorthampton29,379Carnitine Level Testing – Deficiency TestGardner21,183Carnitine Level Testing – Deficiency TestNewburyport18,282Carnitine Level Testing – Deficiency TestNorth Adams13,024Carnitine Level Testing – Deficiency TestSouth Yarmouth11,696Carnitine Level Testing – Deficiency TestMiddleborough Center7,790Carnitine Level Testing – Deficiency TestMansfield Center7,689Carnitine Level Testing – Deficiency TestWhitinsville7,329Carnitine Level Testing – Deficiency TestWest Concord7,003Carnitine Level Testing – Deficiency TestCochituate6,966Carnitine Level Testing – Deficiency TestEast Falmouth6,739Carnitine Level Testing – Deficiency TestPinehurst6,653Carnitine Level Testing – Deficiency TestWest Yarmouth6,124Carnitine Level Testing – Deficiency TestYarmouth Port5,872Carnitine Level Testing – Deficiency TestBliss Corner5,529Carnitine Level Testing – Deficiency TestNorth Scituate5,519Carnitine Level Testing – Deficiency TestEast Harwich5,519Carnitine Level Testing – Deficiency TestRaynham Center5,072Carnitine Level Testing – Deficiency TestSmith Mills4,846Carnitine Level Testing – Deficiency TestNorth Westport4,835Carnitine Level Testing – Deficiency TestThe Pinehills4,724Carnitine Level Testing – Deficiency TestMillis-Clicquot4,653Carnitine Level Testing – Deficiency Test