CBC Parameter Reference Guide
A Complete Blood Count (CBC) checks your red cells, white cells and platelets. This guide explains each value and its usual range.
The CBC Parameter Reference Guide is being built
This free reference guide will appear here shortly. Meanwhile, the formula and ranges below show exactly how it works.
- Parameter (or values from your report)
- Age
- Sex
- What the parameter means
- Reference range
- Low / normal / high
About the CBC Parameter Reference Guide
CBC is the most common blood test. It helps detect anaemia, infections, inflammation and some blood disorders.
Reference ranges & how it works
Typical adult reference ranges (they vary by lab, age and sex):
Haemoglobin: men 13–17 g/dL · women 12–15 g/dL
RBC: men 4.5–5.5 · women 3.8–4.8 million/µL
WBC: 4,000–11,000 /µL · Platelets: 1.5–4.5 lakh/µL
PCV/HCT: men 40–50% · women 36–46%
MCV 83–101 fL · MCH 27–32 pg · MCHC 31.5–34.5 g/dL · RDW-CV 11.6–14%
Calculated indices: MCV = HCT × 10 ÷ RBC · MCH = Hb × 10 ÷ RBC · MCHC = Hb × 100 ÷ HCT.
Frequently asked questions
Do I need to fast for a CBC test?
No. A CBC can be done at any time of the day without fasting.
Why does my report show a slightly different range?
Each lab sets its own ranges based on its machines and population. Always compare your result with the range printed on your report.
Medical disclaimer: These tools give general information and estimates only. They are not a diagnosis and do not replace advice from a qualified doctor. Always talk to your doctor about your results, and seek urgent medical help in an emergency.