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Pacific · Online Liver Function Test (LFT Test)

Online Liver Function Test (LFT Test) in California

Online Liver Function Test (LFT Test) can be ordered without a referral from your own doctor, and this guide covers what to expect. A liver function test checks how well your liver is working by measuring several substances in your blood.

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

Lab requirements in California

Here is what you need before ordering and completing the Online Liver Function Test (LFT Test) in CA. 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 vary by laboratory, so follow the specific instructions provided by the collection lab. Some tests may require fasting, while others do not.
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

A liver function test is a group of blood tests that assess the health and function of your liver. It measures levels of enzymes, proteins, and other substances that can indicate liver damage or disease.

What it measures

  • Albumin — a protein made by the liver that reflects liver function and nutritional status
  • Total Protein — measures the total amount of proteins in the blood, including albumin and globulins
  • ALP (Alkaline Phosphatase) — an enzyme found in the liver, bile ducts, and bone
  • ALT (Alanine Aminotransferase) — an enzyme primarily found in the liver that can indicate liver damage
  • AST (Aspartate Aminotransferase) — an enzyme found in the liver and other tissues that can indicate liver damage
  • Bilirubin — a yellow pigment produced from the breakdown of red blood cells that is processed by the liver

What the test involves

The test requires a standard blood draw 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 a liver function test to screen for liver problems, monitor a known liver condition, or check for side effects of certain medications. It can also help evaluate symptoms like jaundice, fatigue, or abdominal pain.

Preparation

Preparation instructions vary by laboratory, so follow the specific instructions provided by the collection lab. Some tests may require fasting, while others do not.

How results are reported

Results are typically reported as numerical values for each marker, often with a reference range for comparison. Reference ranges can vary between laboratories, so your results should be interpreted by a healthcare professional.

Before you go

  • Whether fasting is required before the test
  • Any medications or supplements you are taking that might affect results
  • The expected turnaround time for results

Cities

Online Liver Function Test (LFT Test) in California communities

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

Los Angeles12,121,244Online Liver Function Test (LFT Test)San Francisco3,290,197Online Liver Function Test (LFT Test)San Diego3,084,174Online Liver Function Test (LFT Test)Riverside2,022,285Online Liver Function Test (LFT Test)Sacramento1,924,167Online Liver Function Test (LFT Test)San Jose1,729,879Online Liver Function Test (LFT Test)Fresno719,558Online Liver Function Test (LFT Test)Concord640,270Online Liver Function Test (LFT Test)Bakersfield590,845Online Liver Function Test (LFT Test)Mission Viejo588,540Online Liver Function Test (LFT Test)Murrieta509,526Online Liver Function Test (LFT Test)Long Beach466,565Online Liver Function Test (LFT Test)Oakland437,548Online Liver Function Test (LFT Test)Stockton406,822Online Liver Function Test (LFT Test)Victorville389,060Online Liver Function Test (LFT Test)Modesto382,994Online Liver Function Test (LFT Test)Lancaster381,732Online Liver Function Test (LFT Test)Oxnard366,330Online Liver Function Test (LFT Test)Indio361,831Online Liver Function Test (LFT Test)Anaheim348,204Online Liver Function Test (LFT Test)Antioch322,796Online Liver Function Test (LFT Test)Santa Rosa314,196Online Liver Function Test (LFT Test)Santa Ana313,818Online Liver Function Test (LFT Test)Irvine297,868Online Liver Function Test (LFT Test)Santa Clarita275,230Online Liver Function Test (LFT Test)Chula Vista274,818Online Liver Function Test (LFT Test)Visalia249,804Online Liver Function Test (LFT Test)Fremont231,502Online Liver Function Test (LFT Test)San Bernardino220,821Online Liver Function Test (LFT Test)Thousand Oaks211,045Online Liver Function Test (LFT Test)Moreno Valley208,371Online Liver Function Test (LFT Test)Fontana208,087Online Liver Function Test (LFT Test)Salinas199,290Online Liver Function Test (LFT Test)Huntington Beach198,735Online Liver Function Test (LFT Test)Santa Barbara198,240Online Liver Function Test (LFT Test)Glendale196,512Online Liver Function Test (LFT Test)Hemet191,170Online Liver Function Test (LFT Test)Vallejo181,882Online Liver Function Test (LFT Test)Elk Grove175,510Online Liver Function Test (LFT Test)Ontario175,223Online Liver Function Test (LFT Test)Oceanside174,461Online Liver Function Test (LFT Test)Rancho Cucamonga173,946Online Liver Function Test (LFT Test)Garden Grove172,708Online Liver Function Test (LFT Test)Palmdale167,987Online Liver Function Test (LFT Test)Santa Cruz165,933Online Liver Function Test (LFT Test)Hayward162,254Online Liver Function Test (LFT Test)Corona157,844Online Liver Function Test (LFT Test)Merced157,617Online Liver Function Test (LFT Test)Sunnyvale155,550Online Liver Function Test (LFT Test)Pomona151,592Online Liver Function Test (LFT Test)Escondido151,443Online Liver Function Test (LFT Test)Torrance147,156Online Liver Function Test (LFT Test)Roseville145,687Online Liver Function Test (LFT Test)Fairfield145,163Online Liver Function Test (LFT Test)Fullerton142,964Online Liver Function Test (LFT Test)Santa Maria142,230Online Liver Function Test (LFT Test)Orange139,195Online Liver Function Test (LFT Test)Pasadena138,771Online Liver Function Test (LFT Test)Yuba City129,536Online Liver Function Test (LFT Test)Santa Clara127,922Online Liver Function Test (LFT Test)