How it works
Pick your test, enter the number exactly as printed on your report, and hit Check my result. The ranges come from our own test guides and standard reference intervals. Some ranges differ by sex — selecting it gives a more precise reading.
About these ranges
Every range in this tool is taken from our own test guides, which cite peer-reviewed sources. Reference ranges can differ slightly between laboratories because analysers and methods vary — so the range printed on your report is the one that counts, and this checker is an orientation aid, not a verdict.
A single out-of-range value rarely tells the whole story. Doctors look at trends across repeat tests, your symptoms, your medicines, and the rest of your panel before drawing conclusions.
Normal ranges used by this tool
| Test | Normal range | Unit | |
|---|---|---|---|
| CRP (C-reactive protein) | Below 10 | mg/L | Guide |
| hsCRP (high-sensitivity CRP) | Below 1 | mg/L | Guide |
| ESR (erythrocyte sedimentation rate) | F: Below 20 · M: Below 15 | mm/hr | Guide |
| HbA1c | 4 – 5.7 | % | Guide |
| Fasting glucose | 70 – 100 | mg/dL | Guide |
| Fasting insulin | 5 – 10 | mU/L | Guide |
| Total cholesterol | 120 – 200 | mg/dL | Guide |
| LDL cholesterol | 50 – 100 | mg/dL | Guide |
| HDL cholesterol | F: 50 or above · M: 40 or above | mg/dL | Guide |
| Triglycerides | Below 150 | mg/dL | Guide |
| TSH | 0.4 – 4 | mIU/L | Guide |
| Free T4 | 0.8 – 1.8 | ng/dL | Guide |
| Vitamin D (25-OH) | 30 – 100 | ng/mL | Guide |
| Vitamin B12 | 150 – 900 | pmol/L | Guide |
| Ferritin | F: 11 – 307 · M: 24 – 336 | ng/mL | Guide |
| Serum iron | 50 – 175 | mcg/dL | Guide |
| Hemoglobin | F: 12 – 15.5 · M: 13.5 – 17.5 | g/dL | Guide |
| WBC (white blood cells) | 4,000 – 11,000 | /µL | Guide |
| Platelets | 150,000 – 400,000 | /µL | Guide |
| Creatinine | F: 0.59 – 1.04 · M: 0.74 – 1.35 | mg/dL | Guide |
| eGFR | 90 or above | mL/min/1.73m² | Guide |
| Urea (serum) | 15 – 45 | mg/dL | Guide |
| ALT (SGPT) | Below 56 | U/L | Guide |
| AST (SGOT) | Below 40 | U/L | Guide |
| ALP | Below 147 | U/L | Guide |
| Bilirubin (total) | Below 1.2 | mg/dL | Guide |
| Albumin | 3.5 – 5 | g/dL | Guide |
| Calcium | 2.2 – 2.6 | mmol/L | Guide |
| Sodium | 135 – 145 | mmol/L | Guide |
| Potassium | 3.5 – 5 | mmol/L | Guide |
| Uric acid | F: 2.6 – 6 · M: 3.5 – 7.2 | mg/dL | Guide |
| PSA | Below 4 | ng/mL | Guide |
| Testosterone | F: 15 – 70 · M: 300 – 1,000 | ng/dL | Guide |
Frequently asked questions
Is this checker a substitute for my doctor’s interpretation?
No. It gives a rough orientation based on standard reference ranges. Your doctor interprets results with your symptoms, medical history, medicines, and trends over time — always discuss your report with them.
Why is my lab’s normal range slightly different from the checker’s?
Different laboratories use different analysers and methods, so reference ranges vary slightly. The range printed on your own report is the one that counts — the checker uses widely standard bands for orientation only.
My report uses different units. What should I do?
Convert your value to the unit shown next to each test before entering it. Two common conversions: vitamin D in nmol/L divided by 2.5 gives ng/mL, and calcium in mg/dL divided by 4 gives mmol/L. When in doubt, ask your lab.
My result is flagged but I feel fine. Should I worry?
Not necessarily. Single values can be affected by recent illness, medicines, supplements, dehydration, or even the time of day — and mild flags are often transient. What matters most is the trend across repeat tests. Discuss the result with your doctor rather than acting on one number alone.
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Medical Disclaimer: This tool is for general educational purposes only and does not constitute medical advice. Always consult a qualified doctor before making any health decisions.