India Ink Test

India Ink Test

Category
Brain & Nerves
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
All Ages

What Is This Test?

A sample (usually CSF) is mixed with India ink and examined to detect Cryptococcus, a yeast.

Why this test is performed?

Helps diagnose cryptococcal meningitis, especially in people with weak immunity such as HIV.

Who should take this test?

Neurological symptoms such as seizures, weakness, numbness or confusion — as advised by a neurologist.

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

Cryptococcal antigen testing is more sensitive and is often done alongside.

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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