Making sense of your lab results: a patient's guide

Guides 6 min read
Guides·Omar KhalilHealth Educator·May 28, 2026· 6 min read

Reference ranges, abnormal flags and trends — a plain-language guide to reading the numbers on your lab report.

A lab report can feel like a wall of numbers. But once you understand a few basics, it becomes much easier to follow what your results are telling you. For a deeper look at trends and color-coded flags, see Reading your lab results and insights in the Help Center.

Reference ranges

Each result is compared to a reference range — the values typical for a healthy population. A result outside that range isn't automatically a problem, but it's worth a conversation with your doctor.

The power of trends

A single result is a snapshot. Tracking the same value over several tests reveals the direction it's moving — often more useful than any one number on its own.

When to ask for help

  • A result flagged as critical
  • A steady trend in the wrong direction
  • Anything you simply don't understand