Online Liver Function Test (LFT Test)
Online Liver Function Test (LFT Test) can be requested without a referral, and this overview covers what to expect. An online liver function test (LFT) is a blood test that checks how well your liver is working and looks for signs of liver irritation or damage. It is often ordered during a routine checkup, when you have symptoms like fatigue or jaundice, or to monitor the effects of certain medicines.
- Sample type
- blood
- Category
- Liver
- Turnaround
- 1-3 business days
- Price
- $49
- Referral
- Not required
An online liver function test (LFT) is a blood test that checks how well your liver is working and looks for signs of liver irritation or damage. It is often ordered during a routine checkup, when you have symptoms like fatigue or jaundice, or to monitor the effects of certain medicines.
What it measures
- ALT — An enzyme mostly found in the liver; higher levels can suggest liver cell injury.
- AST — An enzyme in the liver and other tissues; higher levels can indicate liver or muscle stress.
- ALP — An enzyme linked to the bile ducts; higher levels may point to a blockage or bone issue.
- Bilirubin — A yellow pigment made when old red blood cells break down; high levels can cause jaundice.
- Albumin — A protein made by the liver; low levels can reflect poor liver function or other conditions.
- Total protein — Measures overall proteins in the blood, including those made by the liver.
Who it is for
A doctor or other licensed clinician typically orders an LFT when evaluating liver health, checking for side effects of medicines, or monitoring a known liver condition.
Preparation
Fasting is often not required for a basic LFT, but some labs may ask you to fast for 8–12 hours if other tests are included. Follow the specific instructions provided with your order.
Results and what they mean
Results are reported as numbers with a reference range for each marker. A clinician interprets these values alongside your symptoms, history, and other tests; this information is not medical advice.
How to order this test
- Choose the test and place a confidential order online.
- Select a certified collection site and pick a time that suits you.
- Have your specimen collected — most draws take only a few minutes.
- Review results in a secure portal, typically within 1–3 days.
Preparation, hours, and pricing vary by site; confirm details directly with the lab before your visit.
Availability by state
Direct-access online ordering for the online liver function test (lft test) is available in most states. It is currently unavailable in 6 states:
Everywhere else you can order confidentially and collect your sample at a certified site. Browse by state →
Frequently asked questions
Do I need to fast for an online LFT?
Not always. Many labs do not require fasting for a basic LFT, but if your order includes glucose or lipids, you may need to fast. Check the instructions that come with your test kit.
How long do results take?
Typical turnaround is 1–3 business days after the lab receives your sample. Some labs may take longer.
Can I use an online LFT to diagnose a liver condition?
No. This test provides information, but only a clinician can diagnose a condition after reviewing your results and history.
Is my privacy protected?
Reputable online testing services use secure systems and keep your information confidential. Review the privacy policy before ordering.