[sslaptnhablhat]

I am in luck (Kinda)! http://onyxmet.com/?route=product/product&path=69_326&product_id=2497

[sslaptnhablhat]

Does anyone have any ideas on the amount of ^99mTc that typically enters the body during a radioactive tracer scan, and if it'd be practical to try to extract however much ⁹⁹Tc that'd be excreted in urine?

[billnotgatez]

In a home lab?

[wildfyr]

I would be ridiculously impressed if someone pulled this off in any lab. I know in the early days of nuclear research they went to extreme lengths to reclaim the precious materials, including extracting it from the excretions of a worker who spilled plutonium (I think?) on himself .

[sslaptnhablhat]

Only now do I realise how ridiculous my question sounds, lol.
So, ^99mTc's specific activity, according to http://www.iem-inc.com/information/tools/specific-activities, is 5,200,000 Ci/g. According to Wikipedia, 11-30 mCi are injected into patients, so we'll assume an average of 20 mCi, or 0.02 Ci. Dividing this by 5,200,000, we get 3.85x10^-9 grams. Wow.

[wildfyr]

I'm sure you could get out those 4 nanograms from a several gallons of urine over a few weeks!