Has USADA ever found that the initial positive test was wrong?

[Pacemaker Joe]

it is rare, but can happen.

I recall Cung Le's sample had issues. I don't recall other specific instances, but there's obviously a reason for taking two samples.

Cung Le's sample had issues because the lab conducting the test (a lab USADA would never use) wasn't qualified to detect HGH, but they said fuck it and reported a positive anyway. Cung Le's test came back positive because the UFC ran their own shit testing program, and cheaped out using a lab in Macau or somewhere, rather than flying the sample to an accredited lab in Beijing or Sydney.

 

[Pacemaker Joe]

In your medical experience
If I take some ibutamoren, will I get YOEL like traps?
Srs

I don't think Yoel got his traps from taking a supplement contaminated with ibutamoren, or from intentionally taking it in some other form.

I am very much not an MD or pharmacology expert.

 

[thechoice2]

Nate Marquardt is the only one I remember in MMA where the B and A sample had differing results but this was well before the USADA era.

 

[Rizz]

This was awhile ago so I could be wrong but I think Cro Cop's B sample came back clean. The problem was he already publicly admitted that he took PEDs. I guess they just barely caught him at the very end of detection timing and the amount was so small it was not in B sample.

 

[Senzo Tanaka]

I can only remember one time and it was boxing. The A sample was positive but the B wasn't. They've learned their lesson now and test the hell of them.

Tainted supplements is just an excuse to save face that you didn't willingly take them. In order to get a reduced sentence, you have to provide a sample of the tainted supplement and then USADA has to independently buy the same supplement and find the substance.

This is what happened with Romero but he still got suspended. It was still in your body and you still took it. They see it as negligence.

There is zero chance that the Jones test is wrong. The question is why did he have it in his system. I think he simply got caught with new tests on a PED he thought he could get away with.

 

[Senzo Tanaka]

This was awhile ago so I could be wrong but I think Cro Cop's B sample came back clean. The problem was he already publicly admitted that he took PEDs. I guess they just barely caught him at the very end of detection timing and the amount was so small it was not in B sample.

Nope. Cro Cop said in an interview he was taking HGH and they suspended him for it. He never failed a drug test. Just admitting he used it got him in trouble.

If they don't test for HGH, you don't get caught for HGH. This is similar to Jones. They weren't testing for turinabol every test which is why he could pass others and not the one he popped on.

 

[Ken Fresno]

Diaz, 32, submitted three urine samples on the night of Jan. 31: one prior to his fight against Anderson Silva (administered at 7:12 p.m.), and two in the hours afterward (administered at 10:38 p.m. and 11:55 p.m.).

Of those three samples, the first and the third were administered under World Anti-Doping Agency (WADA) protocol and submitted for testing to the WADA-accredited Sports Medicine Research and Testing Laboratory in Salt Lake City, UT. Both of those tests came back clean.

The 10:38 p.m. test, however, was administered by a separate testing representative and submitted to Quest Diagnostics, a non-WADA accredited lab in New Jersey. That test came back over the threshold for allowable marijuana metabolites, resulting in the lone positive test.

The ‘B' sample for the Quest result was never requested for testing.

Diaz's defense, led by Middlebrook, argued that the existence of two negative tests taken the span of a few hours, both conducted under WADA protocol, cast the Quest result as "scientifically unreliable" and an "inexplicable outlier."

"There is simply no medically plausible explanation for the Quest result of 733 ng/ml. None whatsoever," Middlebrook argued. "Yet in arbitrary and capricious fashion, this commission has filed a disciplinary complaint against Mr. Diaz in a situation where two tests results from a WADA-approved lab produced negative results -- negative results that bookend the erroneous result within a matter of hours, yet the complaint makes absolutely no mention of those two negative tests. None whatsoever.

 

[Shaddows]

Cung Le's sample had issues because the lab conducting the test (a lab USADA would never use) wasn't qualified to detect HGH, but they said fuck it and reported a positive anyway. Cung Le's test came back positive because the UFC ran their own shit testing program, and cheaped out using a lab in Macau or somewhere, rather than flying the sample to an accredited lab in Beijing or Sydney.

true. Thanks for the reminder

 

[Madmick]

It shouldn't happen at a greater incidence than the incidence of (flawed) tainted tests, overall.

So look that up and you have your answer. It's different for different tests, but Google is spitting out a general figure of 5%-10%. That seems ridiculously high. At that rate one should expect that ~1% of innocent fighters are wrongly convicted on two consecutive false-positives. I'm guessing they factor in "accidental" supplement tainting into that figure. Yeah, so I tracked down the original source:
http://www.webmd.com/drug-medication/news/20100528/drug-tests-often-trigger-false-positives

False-Positive Results in 5% to 10% of Cases

To get a better picture of the tests' flaws, Smith and colleagues at Boston Medical Center reviewed scientific articles on drug screening published between January 1980 and September 2009.

The results were presented at the American Psychiatric Association's annual meeting.

Cold medications, the antidepressant Wellbutrin, and tricyclic antidepressants can trigger false-positive results on tests for amphetamines, according to the review, and the antidepressant Zoloft and the painkiller Daypro can show up as a benzodiazepine problem.

The quinolone antibiotic drugs can trigger false positives for opioids, and the HIV medication Sustiva can show up as marijuana use, Smith says.

On the other hand, just being in the room with someone who is smoking marijuana is not going to trigger false positive results, no matter what your child claims, he says.

"Unless [they] were in the van with Cheech and Chong, that's not what happened," Smith says.

And "cocaine is cocaine -- you don’t get many false positives or false negatives," says Petros Levounis, MD, director of the Addiction Institute of New York at St. Luke's and Roosevelt Hospital in New York City.

I have to believe that only a tiny fraction of a percent of all testings produce a false positive due to a failure to uphold lab protocol.

 

[Team Sleep]

I hear the words "flagged for a potential" doping violation but don't know exactly what that means.

Has it ever happened that a potential doping violation was a mistake somehow? Also, could his A sample be positive while his B sample is negative?

Never. Not a single fucking time. 100% of the time, it has proven to be positive with the B sample. He juiced.

 

[Pacemaker Joe]

It shouldn't happen at a greater incidence than the incidence of (flawed) tainted tests, overall.

So look that up and you have your answer. It's different for different tests, but Google is spitting out a general figure of 5%-10%. That seems ridiculously high.

The WebMD article is taking about genetic employment screening tests. Most of those don't give a fuck about levels, just the presence of something. So you get a positive due to poppyseeds, or walking by someone who lit up.

Many of the drugs on the prohibited list have a threshold below which USADA will not report a positive. Look at the event in Texas a few months ago. 3 guys tested positive for weed, but USADA didn't care because they were well below the threshold. But Texas being Texas, the AC suspended them separately.

There isn't a 5% false positive rate. I'd be shocked it there's a 0.5% false positive rate.

I wouldn't be surprised if over 5%popped for something they didn't intentionally take though. If they don't wash the glassware, or the pill press, or any other equipment properly between batches, a backroom lab making turinabol could easily end up contaminating another product with it.