“Once you eliminate the greater improbabilities, whatever remains, no matter how it improbable it may appear, it probably is the truth.”
Maybe this sample did not come from the moon at all! That would be a simple explanation.

This will get the conspiracy theorists going.
"The samples aren't really from the moon, they're just earth samples that weren't properly sterilized!"

Interesting article. Too bad that the one comment so far is from "EUbrainwashing", an obvious Moon Hoax nut. Seriously, is there anyone more stupid or gullible than a Moon Hoaxer?
Why aren’t there stars in the pictures? (they know nothing about basic photography or how the human eye works) Where’s the blast crater under the LEM? (they can’t do simple math and figure out that the average pressure exerted on the surface is about 1 psi) But, but, but the Van Allen Belts! (would rather believe some internet kooks than ALL the experts, who know that rocketing through at 25,000 mph presents a very small, acceptable risk) You can’t form footprints without moisture! (in sand maybe, but in dust it’s easy) The Earth should look 6 times bigger than the Moon in the photos! (no, it should look 4 times bigger, and it does…both look smaller in photos, but the proportions are correct) How come all the pictures are perfect? (they’re not, but the ones published most often are the good ones…do Moon hoaxers distribute the vacation photos where someone’s head was cut off?) Why can’t you hear the sound of the engine over Armstrong’s voice? (among other things, they must think sound is conducted in a vacuum) If we did it back then, why aren’t we there now? (it’s technically challenging and expensive; they don’t understand that you can only be first once…)
And on, and on, and on….all dumb, all easy to disprove. These mental midgets lack a basic understanding of science, the ability to do a tiny bit of research, and the intelligence to recognize flawed arguments. What they do have is the amazing ability to favor the word of random internet kooks over experts, and then refer to others as “sheeple”.
Again, is there anyone more stupid or gullible than a Moon hoaxer? Maybe a Flat Earther, Young Earth Creationist, 9-11 Twoofer, or a Sandy Hook Twoofer. Maybe.
Don’t forget to accuse me of being a paid, trained CIA employee!

NASA’s motto - If you can’t Make it Fake it
"No manned spacecraft now exists that can withstand the radiation from the Van Allen belts, through which a craft must traverse to make it to the Moon." -SpaceCast News Service, March 9, 1998
CONCLUSION APOLLO WAS FAKE

I saw no mention in the article of lunar contamination via material ejected as a result of meteor strikes on earth. If nothing else, the "dinosaur killer" strike probably ejected material with biological content, some of which would be distributed across the moon's surface, and later mixed in the moon dust.. There have been many possible opportunities, since even before cellular life emerged on Earth's surface.
Dave Walter

Really? So with tiny, under 2M parts per billion, levels of contamination, the samples are not from the moon......the only other possibility, taking into consideration your contention, is that it came from the earth. I wonder what the concentration of amino acids is in my cats box? And the way my dogs mark the plants and water hydrants along our way EVERY night, the contamination COULD probably get that high. Is there anywhere on earth that that low level of contamination could be observed?

this shows how careless we have been!if those compounds had been deadly we would all have been dead! a big lesson to be learned!.

...simple polarimetry tests were available in the 70's to determine AA dexter or levo polarity, as well as, isotope quantitative analysis-- this explanation doesn't ring true to me.

Hey carl23, I was taking your arguments with some validity until you dropped the 911 bomb.
If some people are hoax nutters, then that makes you a believer of the alibi that's got all kinds of holes in it.
That's what makes the world go round!
Besides, there's this Russian dude who recently said he wants to send a probe to the moon to find the actual footprints left behind. Stay tuned.