Q. Why do I have nail clubbing?

Answered by
Dr. Sanjib Kumar Sahu
and medically reviewed by iCliniq medical review team.
This is a premium question & answer published on Jan 21, 2018 and last reviewed on: Jan 17, 2023

Hello doctor,

Does this look like an early nail clubbing? I came across something on the internet and started looking at my nails. I did a Schamroth test and I have a very small window. I am a bit concerned.



Welcome to

Nail clubbing is present if oxygen saturation is low or if there is an increase in reduced hemoglobin for a long time.

All clinical tests like Schamroth have its own drawback.

So do not rely on Schamroth.

Clubbing can occur without any disease.

You need to get one arterial blood gas test.

Kindly send the photos of your fingers and toes.

Thank you doctor,

Is arterial gas same as pulse oximetry? I had a physical a month ago and I know my pulse oxygen was 99 %. I have attached photos of my hands.



Welcome back to

I have gone through the attachments (attachment removed to protect patient identity).

It does not appear to be clubbing.

Oximetry and other parameters are normal.

Hello doctor,

Thank you very much for your reply.



Welcome back to

You are most welcome.

No, it is not clubbing. So, do not worry.

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