Jeremy Price, a former scientist with the Anti-Doping Research firm based in Los Angeles, told jurors that the firm's tests of medical waste found no evidence of the one form of B-12 that was checked.
Price said the lab testing did not find traces of vitamin B-12 or lidocaine on the tested medical waste. Those are the substances that Clemens claims he received in injections from former strength coach Brian McNamee.
When asked by defense attorney Mike Attanasio about how the B-12 compound was tested, Price responded, "there are different formulas and we tested for the most common."
The "most common" form of B-12 was chosen due to the number of varieties of B-12 cited in scientific literature, according to Price.
Attanasio asked Price "You were looking for the most common formula form 2009?"
Price answered "Yes."
That form of B-12 that was most common in 2009, as opposed to the form of the vitamin B-12 that was most common in the year 1999 through 2003, when the Clemens claims he received B-12 injections from McNamee.
Price said he was unable to name any of the other forms of B-12 and said he was unsure of how many forms of B-12 there were at that time.
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