LabInformationLab tests, explained

Carnitine Level Testing in California

Below is a plain-language overview of the carnitine level testing. Carnitine level testing measures the amount of carnitine in your blood. Carnitine is a substance your body uses to turn fat into energy. This test is ordered when a doctor suspects a carnitine deficiency or a disorder that affects how your body uses fatty acids. California residents in Pacific can request the carnitine level testing online and choose a convenient collection point.

Sample type
blood
Category
General Wellness
Turnaround
1-3 business days
Price
$118
Referral
Not required

Carnitine level testing measures the amount of carnitine in your blood. Carnitine is a substance your body uses to turn fat into energy. This test is ordered when a doctor suspects a carnitine deficiency or a disorder that affects how your body uses fatty acids.

What it measures

  • Total carnitine — The combined amount of all forms of carnitine in your blood.
  • Free carnitine — The form that is readily available for your body to use.
  • Acylcarnitine — Carnitine that is attached to fatty acids, helping them move into cells.
  • Carnitine ratio — A calculated comparison of free carnitine to acylcarnitine, which can help identify certain conditions.

Who it is for

This test is usually ordered by a doctor, often a specialist such as a metabolic geneticist or neurologist, when a patient has symptoms like muscle weakness, low blood sugar, or unexplained fatigue.

Preparation

You may need to fast (not eat or drink anything except water) for several hours before the test. Your doctor will give you specific instructions; otherwise, no special preparation is needed.

Results and what they mean

Results are reported as numbers for each form of carnitine, often with a reference range. Your doctor will interpret these numbers along with your symptoms and other tests. This information is not medical advice; only a qualified healthcare professional can diagnose or treat any condition.

Requesting the Carnitine Level Testing in California

Order online, choose a certified collection site in California, and review results through a secure portal. No referral is required, and orders are processed confidentially. Because the region is uneven, coastal metros, inland towns, and rural counties with very different access to testing — worth planning around when you book.

Frequently asked questions

Do I need to fast for this test?

Sometimes. Your doctor will tell you if you need to fast. If not, you can eat normally.

What do abnormal results mean?

Abnormal levels may suggest a carnitine deficiency or a metabolic disorder. Your doctor will explain what your specific results mean for you.

Is this test painful?

It is a standard blood draw, which may cause a brief pinch or sting. Most people tolerate it well.

How long until I get results?

Results are typically available in 1 to 3 business days, but this can vary by lab.

Carnitine Level Testing by city in California

All testing in California →   Full Carnitine Level Testing guide →