Lab reports are hard to read. LabDecode turns each number into a short, clear answer. Pick your test, type in your value, and see where it falls against Quest Diagnostics and LabCorp reference ranges.
Each guide below covers one common US lab panel. You get the normal range, the usual causes of a high or low result, and a note on when to call your doctor.
Hemoglobin, white cells, and platelets. Doctors order it more than any other blood test.
Explore CBC →Glucose, kidney, liver, and electrolytes. It shows up at most annual physicals.
Explore CMP →LDL, HDL, and triglycerides. Learn how they relate to heart disease risk.
Explore Lipid Panel →TSH, T3, and T4. See what an underactive or overactive thyroid looks like on paper.
Explore Thyroid →Your average blood sugar over about three months, and where prediabetes and diabetes begin.
Explore HbA1c →Creatinine, BUN, and eGFR. These numbers show how well your kidneys filter.
Explore Kidney →Choose a test and enter your value. You get a plain-English result next to the normal range.
Open tool →Turn an HbA1c percentage into estimated average glucose (eAG) with the ADA formula.
Open tool →Add creatinine, age, and sex. The tool estimates your eGFR and CKD stage with the 2021 CKD-EPI equation.
Open tool →You do not need an account. We do not save your lab values.
Look at the panel name on your Quest or LabCorp report. Then open the matching guide, such as CBC, CMP, or lipid panel.
Type the number from your report into the Lab Report Decoder. Our ranges follow the ones Quest, LabCorp, and ARUP publish.
Read what the result means and where it sits on the range. Then decide whether to keep an eye on it or call your doctor.
Each article links to the matching test page and calculator. See every guide.
A beginner's guide to reference ranges, units, and the H and L flags.
Read the guide →Anemia, thyroid, B12, iron, and blood sugar are common culprits.
Read the guide →See your real risk and the steps that can lower it.
Read the guide →Learn which tests need it, and whether coffee or water breaks it.
Read the guide →Understand LDL, HDL, and triglycerides at a younger age.
Read the guide →A blood test compares your numbers with a reference range. That range comes from healthy people. If you land inside it, your result is normal. If you land outside it, the report flags the value as high or low. A flag is a prompt for a question, not a diagnosis. Try the Lab Report Decoder to see what a specific value means, or read our beginner's guide to reading blood test results.
Our ranges follow the ones Quest Diagnostics, LabCorp, and ARUP publish. Those three labs run a large share of US testing. We use US units such as mg/dL, mEq/L, and g/dL. Still, your own report prints the range your lab used. Trust that range first, because methods differ a little from lab to lab.
No. Every calculator runs in your browser, so the numbers you type never reach our server. We do use Google Analytics to count visits and see which pages people read. That data covers page views and device details, not your lab values. Our Privacy Policy explains the details.
No. LabDecode is an educational resource to help you understand your results and prepare better questions for your healthcare provider. It does not diagnose conditions or replace professional medical advice. Always consult your physician about your results.
We cover six common panels. They are the complete blood count, comprehensive metabolic panel, lipid panel, thyroid panel, HbA1c, and kidney function tests. Each page lists the parameters, normal ranges, and common causes of abnormal results.