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Midwest · Online Liver Function Test (LFT Test)

Online Liver Function Test (LFT Test) in Illinois

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 Illinois

Here is what you need before ordering and completing the Online Liver Function Test (LFT Test) in IL. 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 Illinois communities

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

Chicago8,595,181Online Liver Function Test (LFT Test)Rockford289,763Online Liver Function Test (LFT Test)Round Lake Beach287,012Online Liver Function Test (LFT Test)Peoria255,718Online Liver Function Test (LFT Test)Aurora183,447Online Liver Function Test (LFT Test)Springfield162,588Online Liver Function Test (LFT Test)Champaign153,278Online Liver Function Test (LFT Test)Joliet150,323Online Liver Function Test (LFT Test)Naperville149,013Online Liver Function Test (LFT Test)Bloomington134,357Online Liver Function Test (LFT Test)Elgin114,156Online Liver Function Test (LFT Test)Waukegan89,751Online Liver Function Test (LFT Test)Decatur88,002Online Liver Function Test (LFT Test)Cicero84,905Online Liver Function Test (LFT Test)Alton83,705Online Liver Function Test (LFT Test)Kankakee82,095Online Liver Function Test (LFT Test)Evanston78,454Online Liver Function Test (LFT Test)Schaumburg78,053Online Liver Function Test (LFT Test)Arlington Heights77,283Online Liver Function Test (LFT Test)Bolingbrook73,807Online Liver Function Test (LFT Test)Palatine67,754Online Liver Function Test (LFT Test)Skokie67,444Online Liver Function Test (LFT Test)DeKalb66,624Online Liver Function Test (LFT Test)Carbondale66,482Online Liver Function Test (LFT Test)Des Plaines60,413Online Liver Function Test (LFT Test)Orland Park58,622Online Liver Function Test (LFT Test)Oak Lawn58,032Online Liver Function Test (LFT Test)Berwyn56,960Online Liver Function Test (LFT Test)Mount Prospect56,510Online Liver Function Test (LFT Test)Tinley Park55,988Online Liver Function Test (LFT Test)Oak Park54,100Online Liver Function Test (LFT Test)Wheaton53,762Online Liver Function Test (LFT Test)Normal53,446Online Liver Function Test (LFT Test)Hoffman Estates52,153Online Liver Function Test (LFT Test)Downers Grove50,209Online Liver Function Test (LFT Test)Glenview48,150Online Liver Function Test (LFT Test)Elmhurst45,661Online Liver Function Test (LFT Test)Lombard44,311Online Liver Function Test (LFT Test)Plainfield44,296Online Liver Function Test (LFT Test)Buffalo Grove43,062Online Liver Function Test (LFT Test)Moline42,660Online Liver Function Test (LFT Test)Belleville42,463Online Liver Function Test (LFT Test)Bartlett41,126Online Liver Function Test (LFT Test)Romeoville40,099Online Liver Function Test (LFT Test)Crystal Lake40,082Online Liver Function Test (LFT Test)Carol Stream39,895Online Liver Function Test (LFT Test)Streamwood39,736Online Liver Function Test (LFT Test)Quincy39,687Online Liver Function Test (LFT Test)Park Ridge39,562Online Liver Function Test (LFT Test)Urbana39,189Online Liver Function Test (LFT Test)Wheeling39,104Online Liver Function Test (LFT Test)Carpentersville37,940Online Liver Function Test (LFT Test)Hanover Park37,545Online Liver Function Test (LFT Test)Rock Island37,519Online Liver Function Test (LFT Test)Calumet City36,065Online Liver Function Test (LFT Test)Addison35,999Online Liver Function Test (LFT Test)Northbrook35,108Online Liver Function Test (LFT Test)Oswego34,324Online Liver Function Test (LFT Test)Woodridge34,161Online Liver Function Test (LFT Test)Glendale Heights33,443Online Liver Function Test (LFT Test)