TLC (Total Leucocyte Count) Test

TLC (Total Leucocyte Count) Test

Category
Blood
Sample
Blood sample taken from a vein in your arm
Reports () Terms & Conditions Report time varies with time of sample collection.
In 2 days
Fasting
No Fasting
Age
5+ Years

What Is This Test?

Counts the total number of white blood cells (leucocytes) in your blood.

Why this test is performed?

White blood cells fight infection. A high count suggests infection, inflammation or stress, while a low count can occur with some viral infections, medicines or bone marrow problems.

Who should take this test?

Tiredness, weakness, pale skin, fever, frequent infections, easy bruising or bleeding; routine health check-ups.

Test Preparation

No fasting needed.

Medical disclaimer · for information only, not medical advice

This article is for general information and education only. It is not medical advice, does not create a doctor–patient relationship, and is not a substitute for consultation with a qualified doctor who has assessed your individual situation. Never delay seeking medical advice because of something you have read here.

In a medical emergency, call 112, or 108 for an ambulance where that service operates, or go to your nearest emergency department. If you are in mental health distress, Tele-MANAS is free and available 24×7 on 14416.

Read our Editorial Policy and Medical Review Process.

Frequently asked questions

Roughly 4,000–11,000 cells per microlitre in adults; your report shows the lab's reference range.

No fasting is needed. You can eat and drink normally unless your doctor has advised otherwise.

Blood sample taken from a vein in your arm.

Usually within 11–35 hours after the sample reaches the lab. You will receive the report online.

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