Your liver is one of the most important organs in your body. It helps digest food, removes toxins, stores nutrients, and produces proteins essential for blood clotting. Since liver diseases often develop silently, a Liver Function Test (LFT) is one of the best ways to monitor liver health before symptoms become severe.
At PS Path Lab, we provide accurate and affordable liver function tests with convenient home sample collection across Noida and Ghaziabad.
What is a Liver Function Test (LFT)?
A liver function test (LFT) is a group of blood tests that evaluate how well your liver is working. These tests measure liver enzymes, proteins, and bilirubin levels to identify liver inflammation, infection, damage, or disease.
Doctors often recommend LFTs as part of routine health checkups or when patients experience symptoms related to liver disorders.
What Does a Liver Function Test Measure?
An LFT generally includes:
- Alanine Aminotransferase (ALT)
- Aspartate Aminotransferase (AST)
- Alkaline Phosphatase (ALP)
- Gamma-Glutamyl Transferase (GGT)
- Total Bilirubin
- Direct Bilirubin
- Indirect Bilirubin
- Albumin
- Total Protein
- Globulin
- Albumin/Globulin Ratio
These values help doctors determine whether your liver is functioning normally.
Why is an LFT important?
Your doctor may recommend a liver function test to:
- Detect liver disease early
- Monitor fatty liver disease
- Diagnose hepatitis
- Evaluate alcohol-related liver damage
- Monitor medication side effects
- Assess jaundice
- Check liver function before surgery
- Monitor chronic liver conditions
Symptoms That May Require an LFT
You should consider getting tested if you experience:
- Yellow eyes or skin (jaundice)
- Dark-colored urine
- Pale stools
- Persistent fatigue
- Nausea or vomiting
- Loss of appetite
- Abdominal pain
- Swelling in legs
- Itchy skin
- Unexplained weight loss
Normal Liver Function Test Values
Test Normal Range ALT Adults | 7–56 U/L
AST | 10–40 U/L
ALP | 44–147 U/L
Total Bilirubin | 0.3–1.2 mg/dL
Albumin | 3.5–5.0 g/dL
Total Protein | 6.0–8.3 g/dL
Note: Normal ranges may vary slightly between laboratories.
How to Prepare for a Liver Function Test
Preparation is simple.
- Follow your doctor's advice regarding fasting.
- Avoid alcohol for 24 hours before testing.
- Inform your doctor about medications.
- Drink plenty of water.
- Avoid heavy exercise before sample collection.
What Happens During the Test?
A trained phlebotomist collects a small blood sample from your arm. The procedure usually takes less than five minutes.
If you choose home sample collection, our experienced technician will visit your home at your preferred time.
What Can Abnormal LFT Results Mean?
Abnormal liver function tests may indicate:
- Fatty Liver Disease
- Viral Hepatitis
- Liver Cirrhosis
- Alcohol-Related Liver Disease
- Gallbladder Disorders Liverver Infection
- Liveruced Liver InjuryBileile Duct Obstruction
Only your doctor can accurately interpret your results based on your medical history.
Who Should Get a Liver Function Test?
LFT is recommended for:
- Adults above 35 years
- People with diabetes
- Obese individuals
- Heavy alcohol consumers
- Patients taking long-term medications
- Individuals with hepatitis risk
- Patients with fatty liver
- People undergoing routine health checkups
Frequently Asked Questions (AEO FAQs)
What is a liver function test?
A Liver Function Test is a blood test that measures enzymes and proteins to evaluate liver health.
Is fasting required for an LFT?
Fasting is not always required. Your doctor will advise you based on your specific tests.
How long does it take to get LFT reports?
Most reports are available within the same day or within 24 hours.
Can a liver function test detect fatty liver?
An LFT can indicate liver inflammation associated with fatty liver, but imaging tests like ultrasound are often needed for confirmation.
Is the liver function test painful?
Only a small blood sample is collected, causing minimal discomfort.
Can I book an LFT online?
Yes. PS Path Lab offers easy online booking and home sample collection.
