Lab reference ranges
Are my numbers normal?
A lab report tells you the value but rarely what it means. Pick the test you are looking at, enter your reading, and you get the category it falls into, the exact cut-off on either side of you, how far you are from the nearest one, and what the guideline actually recommends doing about it.
Reviewed 27-07-2026 ACC/AHA 2017 · ADA · NCEP · WHO 2021 12 calculators inside
Your situation
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Each panel has its own cut-offs and its own guideline behind it. Pick the number you are trying to read.
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Your results
Fill in only the fields for the test you picked. Anything left at zero is skipped.
Used for the age-adjusted testosterone expectation and for the menopause reading of FSH.
For guidance only; this does not replace diagnosis, treatment, or professional follow-up. Consult a licensed healthcare professional.
How the total adds up
Your reading against every cut-off
Each row names the guideline it comes from. Bars compare the figures against the largest one in the list.
The scale shows the published bands for the test you selected, from the healthy range through each level of concern, with your value marked on it. The bands are guideline cut-offs, not a verdict on you.
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Frequently asked questions
What is a normal blood pressure?
Under ACC/AHA 2017: normal is below 120/80 mmHg, elevated is 120–129 systolic with diastolic under 80, stage 1 hypertension is 130–139 or 80–89, and stage 2 is 140/90 or above. Anything over 180/120 is a hypertensive crisis.
Why does my doctor say 135/85 is high and another source says it is fine?
Because the two are using different guidelines. ACC/AHA 2017 calls 130/80 and above stage 1 hypertension, while the ESC and WHO keep the threshold at 140/90 and call 135/85 high-normal. Same reading, two names. This hub shows both so you can see which one you are being measured against.
What do my cholesterol numbers mean?
Total cholesterol under 200 mg/dL is desirable and 240 or more is high. LDL is the one that drives treatment: under 100 optimal, 100–129 near optimal, 130–159 borderline, 160–189 high, 190 or more very high. HDL under 40 in men or 50 in women is low, and 60 or more is protective. Triglycerides should be under 150.
What does my HbA1c mean in blood sugar terms?
The ADAG equation converts it: estimated average glucose in mg/dL equals 28.7 times your A1c minus 46.7. So an A1c of 6.0% is an average glucose of about 126 mg/dL. Under 5.7% is normal, 5.7 to 6.4% is prediabetes and 6.5% or above is in the diabetes range.
My A1c and my fasting glucose disagree. Which one is right?
Neither is automatically right. A1c reflects roughly three months of average glucose; a fasting sample is one moment. Disagreement is common and points at either a very recent change in glucose control or something interfering with the A1c — anaemia, haemoglobin variants, pregnancy or kidney disease all distort it. That is a conversation with your clinician, not a calculation.
What ferritin level is too low?
The WHO threshold for depleted iron stores is 15 ng/mL, but most clinicians act below 30 when symptoms fit, because iron deficiency without anaemia is already symptomatic at that level. Ferritin also rises with inflammation, so a "normal" 45 in someone with active inflammation can still mean depleted stores.
Is 92% oxygen saturation bad?
It depends entirely on where you are. At sea level, 92% is below the normal 95–100% band and warrants attention. At 10,000 feet it is close to what an acclimatised healthy person would read. This hub adjusts the expectation for the altitude you enter.
How accurate are consumer pulse oximeters?
Typically within 2 to 3 percentage points under good conditions, and worse than that with cold hands, nail polish, poor circulation or movement. Importantly, they overestimate saturation more often in people with darker skin, which has led to missed low-oxygen states. Treat borderline readings conservatively and let symptoms outrank the device.
What is a normal testosterone level for my age?
Most laboratories use 300 to 1,000 ng/dL for adult men, and the Endocrine Society treats 300 as the action threshold. Levels fall roughly 1% per year from around age 30, so a 60-year-old at the low end of the range is common. A low result must be drawn in the morning and confirmed on a second sample before anything follows.
What FSH level means menopause?
An FSH above about 25 IU/L fits the menopausal transition, but the diagnosis is clinical, not biochemical: 12 consecutive months without a period. FSH swings widely during perimenopause, so a single high value proves nothing on its own and a normal value does not rule it out.
What are the WHO 2021 semen analysis reference values?
The 6th edition lower reference limits are: volume 1.4 mL, concentration 16 million per mL, total count 39 million, total motility 42%, progressive motility 30%, normal morphology 4% and vitality 54%. These are the 5th percentile of men whose partners conceived within a year — being below one of them lowers the odds, it does not mean infertility.
Do I need to fast before these tests?
For fasting glucose, yes — at least 8 hours with nothing but water. For a lipid panel, current guidance allows non-fasting samples for screening, though a fasting draw is still preferred when triglycerides are high. A1c, ferritin and hormone panels do not need fasting, but testosterone should be drawn in the morning.