Hb(Haemoglobin)
Also known as: Hemoglobin test
How to prepare
You can eat and drink normally before the test.
No special preparation needed.
Tell our phlebotomist about any medicines you take. Don't stop them without asking your doctor.
Wear a loose sleeve so the sample can be taken easily from your arm.
How it works
About this test
Haemoglobin is the iron-rich protein in red blood cells that carries oxygen from your lungs to the rest of the body. This test measures how much haemoglobin is in your blood and is the main test to check for anaemia.
Why is this test done?
- Screen for anaemia
- Check the cause of tiredness or breathlessness
- Monitor iron or vitamin treatment
- Check-up during pregnancy
Symptoms — when should you get tested?
- Tiredness and weakness
- Pale skin, lips or nails
- Breathlessness on small effort
- Dizziness or headache
- Cold hands and feet
Normal range
Reference ranges differ slightly between labs, methods, age and sex. Always discuss your report with your doctor.
If your result is high
A high haemoglobin is less common and often happens when the body is short of water.
Common reasons- Dehydration
- Smoking
- Living at high altitude
- Lung or heart disease
- Rarely, polycythaemia (too many red cells)
If your result is low
Low haemoglobin means anaemia — your blood carries less oxygen, which makes you feel tired and weak.
Common reasons- Iron deficiency (most common in India)
- Vitamin B12 or folate deficiency
- Heavy periods or blood loss
- Pregnancy
- Chronic kidney disease or thalassaemia
How is the test done?
- 1Book online
Choose your slot for home collection or a visit to our centre.
- 2Blood sample taken
A trained phlebotomist takes a small blood sample from a vein in your arm with a sealed, single-use needle. It takes about 2 minutes.
- 3Tested in our lab
Your barcoded sample is tested on automated machines with strict quality checks.
- 4Report on WhatsApp
A pathologist checks the result and the report reaches you on WhatsApp and email.
Frequently asked questions
Eat iron-rich foods (green leafy vegetables, jaggery, dates, meat, eggs) with vitamin C, and take supplements only as your doctor advises.
No fasting is needed for this test. You can eat and drink normally.
Your report is usually ready in same day after the sample reaches our lab. We send it on WhatsApp and email, and you can also download it from the Reports page.
Please call our team to confirm whether home sample collection is available for your location and test.
This test needs a blood sample. No special preparation needed.