Anavex Life Sciences Corp (AVXL)

[makemydaze]

I don't really like to interrupt the nice disagreement you two are having but fwiw I think you are both right. Look at this statement:

"Doctors, nurses, scientist, and public health experts all would love to find a biomarker for sleepiness and sleep disorders.

What might a biomarker predict? It might give a quantitative level of how sleepy someone is, how long the person would sleep if allowed to go to bed, how much behavioral measures of performance will be lowered. It might have other uses in the diagnosis of sleep disorders. Insomnia is often of unknown cause and a reliable biomarker might help figure out what is producing disorders and untangling them from other morbidities."

https://www.tuck.com/sleep-biomarkers/

In that case it's not a biomarker.

But then look at a disease (like Alz) whereby insomnia may be a characteristic of pre-Alz lets say. That would make it a biomarker would it not?

No I'm not copping out.