🧬 What Are Liver Function Tests (LFTs)?
Liver Function Tests (LFTs) are blood tests that measure enzymes, proteins, and substances produced or processed by the liver. They help detect liver damage, inflammation, or disease early.
Key markers include:
- ALT (Alanine Aminotransferase) – indicates liver cell injury.
- AST (Aspartate Aminotransferase) – shows liver or muscle damage.
- ALP (Alkaline Phosphatase) – linked to bile duct or bone issues.
- Bilirubin – excess causes jaundice.
- Albumin & Total Protein – reflect the liver’s ability to synthesize proteins.
⚠️ Symptoms That May Require LFTs
- Persistent fatigue or weakness
- Yellowing of skin/eyes (jaundice)
- Abdominal pain or swelling
- Dark urine or pale stools
- Nausea, vomiting, or loss of appetite
- Easy bruising or bleeding
🔎 Common Causes of Abnormal LFTs
- Viral hepatitis (A, B, C)
- Alcoholic liver disease
- Non-alcoholic fatty liver disease (NAFLD)
- Medication side effects (e.g., painkillers, antibiotics)
- Autoimmune liver disorders
- Gallbladder or bile duct obstruction
🚨 Risks if Left Untreated
Ignoring abnormal liver function can lead to:
- Cirrhosis (scarring of the liver)
- Liver failure (life-threatening)
- Liver cancer
- Complications in other organs (kidneys, heart, brain)
Early detection through LFTs can prevent irreversible damage.
❓ Common Misconceptions
- “Normal LFT means my liver is perfect.”
Not always—some conditions (like fatty liver) may show normal results initially. - “Only alcoholics need liver tests.”
False—viral infections, obesity, and medications can also damage the liver. - “Liver disease always shows symptoms.”
Wrong—many liver conditions are silent until advanced stages.
💡 FAQs
Q: How often should I get LFTs?
If you have risk factors (alcohol use, hepatitis, obesity, diabetes, or long-term medication), annual testing is recommended.
Q: Can diet improve liver health?
Yes—balanced nutrition, hydration, and avoiding alcohol/drugs support liver recovery.
Q: Are LFTs painful?
No, it’s a simple blood test.