Metabolic Labs, Decoded
A1c, ApoB, Lp(a), FIB-4 and more: what each number means and which ones change decisions.
Taught by Farhan Tahir, MD ·
8 min
THE LESSON
In this lesson
• A1c and its blind spots
• Why ApoB beats LDL in some people
• Lp(a): the once-in-a-lifetime test
• FIB-4 for fatty liver
• Tests that rarely help
Educational content only. It does not replace advice from your own clinician.
Educational content only, written and reviewed by Farhan Tahir, MD. It does not replace individual medical advice. For sudden chest pain, trouble breathing or stroke symptoms, call 911.
AT A GLANCE
Topic
Tests
Length
8 min
Reviewed by
Farhan Tahir, MD
Questions about your own care?
Dr. Tahir’s team offers consults through Youthful Medicine.
More lessons
8 min
Obesity Is a Disease
Why obesity is a chronic disease of weight regulation, and what the 2025 Lancet Commission changed.
Watch the lesson →
7 min
How GLP-1 Medicines Work
From gut hormone to medicine: how semaglutide, tirzepatide and newer agents reduce appetite and improve metabolism.
Watch the lesson →
9 min
Tirzepatide vs Semaglutide
What head-to-head data show, how the two differ, and how to choose with your clinician.
Watch the lesson →