how much fluid is in a lumbar disc?

Answer 1

As such it is not fluid but a jelly material, so like Jelly, some fluid. I am not sure you could measure it, take some time and a good laboratory. However, once you hit 30, the jelly starts to dehydrate, so unless you are under the age of 30 and willing to allow someone to remove your disc, to figure this out, doubt you will have a conclusive answer. Likewise I state 30, might be 25, might be 35 as we are all individuals.