Lamar Odom fans send him a kidney

A bunch of people have been contacting Lamar and Khloe on social media, responding to TMZ's story that Lamar's kidneys are shot and he may need a transplant.Some people have gone as far as sending blood type info and contact numbers.

For example, one guy wrote, "I dont just say stuff. If Lamar needs a kidney Im willing to donate."

Some fans are generous ... for a price. One guy wrote, "Lamar Odom needs a kidney. I will sell him one of mine for $25k." Another guy upped the ante, setting the price at $100k.