📋 Common Lab Reference Ranges & Critical Values
UseA bedside reminder of typical adult ranges — always defer to your own laboratory's printed range and critical…
SourceLocal laboratory reference ranges and hospital critical-value policies
This-shift next steps
After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.
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Methodology · worked example, guidelines & full notes
Ranges vary by lab, method, population, age and sex.
When to use
A bedside reminder of typical adult ranges — always defer to your own laboratory's printed range and critical-value policy.
How it works
Examples: WBC (3.5–9.5) ×10⁹/L, Na 135–145 mmol/L, INR ≈ 0.8–1.2, total bilirubin ≤ 21 µmol/L.
Key points
- Ranges vary by lab, method, population, age and sex.
- Always defer to the range printed on your own report.
- Critical-value thresholds are set by each hospital.
- Critical values require immediate reporting and action.
References
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Panel | Renal function |
|---|
→ReferenceRenal function
- Creatinine：Men 59–104, women 45–84 µmol/L
- Urea：3.1–8.0 mmol/L
- Uric acid：Men 208–428, women 155–357 µmol/L
| Panel | Complete blood count |
|---|
→ReferenceComplete blood count (adult, common)
- WBC：(3.5–9.5) ×10⁹/L
- Hb：Men 130–175, women 115–150 g/L
- Platelets：(125–350) ×10⁹/L
Verification & sources · governance
FAQ
Frequently asked questions
- What are the limits and cautions when using Common Lab Reference Ranges & Critical Values?
- For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
- Does Common Lab Reference Ranges & Critical Values upload patient data? Where is it calculated?
- Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.
- How is Common Lab Reference Ranges & Critical Values calculated in practice? Can you show a worked example?
- Inputs: Panel Renal function → Result: Reference Renal function（Creatinine: Men 59–104, women 45–84 µmol/L, Urea: 3.1–8.0 mmol/L, Uric acid: Men 208–428, women 155–357 µmol/L） Inputs: Panel Complete blood count → Result: Reference Complete blood count (adult, common)（WBC: (3.5–9.5) ×10⁹/L, Hb: Men 130–175, women 115–150 g/L, Platelets: (125–350) ×10⁹/L）