Skip to content
Dr. Garima Panse
Reports explained

Understand your medical report before the appointment

Reports are written by one doctor for another, and in India the patient usually collects them days before anyone explains them. These 14 guides translate the words and the numbers, so the wait is calmer and the consultation more useful.

How to read any report

  1. Read the impression or conclusion first. On scans it is the radiologist's summary; on lab reports, look for values marked H or L.
  2. Compare each flagged value with the reference range printed on the same report, not a range from the internet.
  3. Check whether a previous report exists. A change over time often matters more than a single number.
  4. Write down the two or three findings you do not understand and take them to the doctor who ordered the test.

Heart Health

Imaging Explained

Everyday Medicine

Questions about reading reports

Can I understand my own medical report before seeing the doctor?

You can understand the words and the normal ranges, and that makes the appointment far more useful. What a report cannot tell you on its own is what a value means for you, because that depends on your symptoms, history, medicines and earlier results. Use these guides to prepare questions, not to reach a diagnosis.

What do 'H' and 'L' next to a value on a lab report mean?

They mean the value is above (H) or below (L) the reference range that particular laboratory uses. A value slightly outside the range is often normal for that person or caused by a recent meal, illness or exercise. It is a prompt to look closer, not a diagnosis.

Why do normal ranges differ between laboratories?

Each laboratory sets its reference range from its own machines, reagents and the population it tests, so the same value can be flagged at one lab and not at another. Always read a result against the range printed on that same report, and compare repeat tests from the same lab where possible.

Who should explain my report, the lab or my doctor?

The doctor who ordered the test. A radiologist or pathologist describes what the test shows; the treating doctor connects it to your symptoms and examination and decides what happens next. If the two seem to disagree, ask your doctor to call the radiologist or lab.

Get the next guide in your inbox

One email when something new is published. No newsletters, no forwarding, and you can reply to ask a question.