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Pacific · Carnitine Level Testing – Deficiency Test

Carnitine Level Testing – Deficiency Test in Washington

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 Washington

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

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

Seattle3,438,221Carnitine Level Testing – Deficiency TestSpokane440,270Carnitine Level Testing – Deficiency TestKennewick241,230Carnitine Level Testing – Deficiency TestBremerton219,538Carnitine Level Testing – Deficiency TestTacoma217,332Carnitine Level Testing – Deficiency TestOlympia200,836Carnitine Level Testing – Deficiency TestVancouver188,331Carnitine Level Testing – Deficiency TestMarysville164,655Carnitine Level Testing – Deficiency TestBellevue149,365Carnitine Level Testing – Deficiency TestKent134,890Carnitine Level Testing – Deficiency TestYakima130,440Carnitine Level Testing – Deficiency TestBellingham129,601Carnitine Level Testing – Deficiency TestEverett110,438Carnitine Level Testing – Deficiency TestRenton105,313Carnitine Level Testing – Deficiency TestSpokane Valley102,178Carnitine Level Testing – Deficiency TestFederal Way99,792Carnitine Level Testing – Deficiency TestKirkland91,656Carnitine Level Testing – Deficiency TestAuburn85,306Carnitine Level Testing – Deficiency TestPasco76,398Carnitine Level Testing – Deficiency TestRedmond72,166Carnitine Level Testing – Deficiency TestWenatchee71,119Carnitine Level Testing – Deficiency TestLongview67,958Carnitine Level Testing – Deficiency TestMount Vernon67,767Carnitine Level Testing – Deficiency TestSouth Hill66,713Carnitine Level Testing – Deficiency TestSammamish66,532Carnitine Level Testing – Deficiency TestLakewood62,972Carnitine Level Testing – Deficiency TestRichland59,718Carnitine Level Testing – Deficiency TestShoreline58,213Carnitine Level Testing – Deficiency TestLacey52,572Carnitine Level Testing – Deficiency TestBurien51,646Carnitine Level Testing – Deficiency TestBothell47,355Carnitine Level Testing – Deficiency TestEdmonds42,622Carnitine Level Testing – Deficiency TestPuyallup42,366Carnitine Level Testing – Deficiency TestIssaquah39,057Carnitine Level Testing – Deficiency TestLynnwood38,812Carnitine Level Testing – Deficiency TestParkland38,092Carnitine Level Testing – Deficiency TestLake Stevens35,135Carnitine Level Testing – Deficiency TestSpanaway34,670Carnitine Level Testing – Deficiency TestUniversity Place34,565Carnitine Level Testing – Deficiency TestWalla Walla33,765Carnitine Level Testing – Deficiency TestGraham33,727Carnitine Level Testing – Deficiency TestPullman32,968Carnitine Level Testing – Deficiency TestDes Moines32,631Carnitine Level Testing – Deficiency TestSeaTac30,867Carnitine Level Testing – Deficiency TestOrchards28,371Carnitine Level Testing – Deficiency TestMaple Valley27,643Carnitine Level Testing – Deficiency TestCamas25,774Carnitine Level Testing – Deficiency TestMill Creek East25,528Carnitine Level Testing – Deficiency TestMercer Island25,506Carnitine Level Testing – Deficiency TestTumwater24,855Carnitine Level Testing – Deficiency TestMoses Lake24,764Carnitine Level Testing – Deficiency TestNorth Lynnwood24,562Carnitine Level Testing – Deficiency TestBainbridge Island24,557Carnitine Level Testing – Deficiency TestOak Harbor24,267Carnitine Level Testing – Deficiency TestKenmore23,556Carnitine Level Testing – Deficiency TestEastmont23,088Carnitine Level Testing – Deficiency TestUnion Hill-Novelty Hill23,060Carnitine Level Testing – Deficiency TestCottage Lake22,779Carnitine Level Testing – Deficiency TestMartha Lake22,251Carnitine Level Testing – Deficiency TestBonney Lake22,229Carnitine Level Testing – Deficiency Test