Does an abnormal flag mean something is wrong?

Not necessarily. Ranges are set so that some healthy people fall outside them. Your doctor interprets results in context.

Why do reference ranges differ between labs?

Labs use different equipment and methods, so each sets ranges for its own tests. Always use the range printed on your report.

Can Clariti tell me what my results mean for my health?

No. Clariti explains what the report says and suggests questions; it does not diagnose. Your doctor decides what the results mean for you.

LAB RESULTS

How to read your lab results

Lab reports often arrive in your patient portal before anyone has explained them. Most follow the same layout: the test, your result, its units, a reference range, and a flag when a result falls outside that range.

A flag is not a diagnosis. Reference ranges vary between labs, many people sit slightly outside a range for harmless reasons, and your doctor reads results alongside your history. Understanding the layout helps you ask the right questions.

The parts of a lab report

Test name or panel: What was measured. A panel (such as a CBC or metabolic panel) groups several tests.
Result: Your value for that test.
Units: How it was measured, such as g/dL or mmol/L. The same test can be reported in different units by different labs.
Reference range: The range most healthy people fall within, for that lab and method. Use the range printed on your own report.
Flag (H, L, A): High, low or abnormal compared with the reference range.
Collection date: When the sample was taken — useful when comparing results over time.

A worked example

Invented results from a complete blood count. Not anyone’s real report.

On the document	Shows	In plain language
Hemoglobin	11.8 g/dL (12.0–15.5) L	Just below this lab’s range, so it is flagged low. Hemoglobin carries oxygen in red blood cells.
White blood cells	6.4 ×10³/µL (4.0–11.0)	Within range, no flag.
Platelets	250 ×10³/µL (150–400)	Within range, no flag.
MCV	78 fL (80–100) L	Average red-cell size, slightly below range.

Two related results are flagged low. That is a reason to ask your doctor what they make of them together — not a conclusion on its own.

What to check

The report is yours — name and date of birth.
Which results are flagged, and by how much.
Whether the ranges and units match earlier reports before comparing numbers.
Any comment from the lab, such as a note about the sample.

Questions worth asking

Ask your doctor

Which of these results matter for me, and why?
Do the flagged results need a repeat test or any follow-up?
How do these compare with my previous results?
Could any of my medicines affect these numbers?

Got a lab report you can’t decode? Attach it or paste the text, and Clariti will explain each line and what to ask.

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Common questions

Does an abnormal flag mean something is wrong?: Not necessarily. Ranges are set so that some healthy people fall outside them. Your doctor interprets results in context.
Why do reference ranges differ between labs?: Labs use different equipment and methods, so each sets ranges for its own tests. Always use the range printed on your report.
Can Clariti tell me what my results mean for my health?: No. Clariti explains what the report says and suggests questions; it does not diagnose. Your doctor decides what the results mean for you.