Just to silence the haters even more please read the following :
"Prior to 1998, the US threshold level for a positive opiate urine test was a morphine concentration greater than 300 nanograms/ml (ng/ml) or 0.3µg/ml. Those levels were changed to concentrations greater than 4000 ng/ml for morphine and 2000 ng/ml for codeine in response to the recognition that poppy seed contamination could indeed result in false-positive opiate test at that level. This is 13 times greater than the amount that would have resulted in a positive urine test for opiates prior to 1998! The International Olympic Committee (IOC) set their threshold for morphine at 1000 ng/ml and will re-examine any disputed positive opiate test upon request. A nanogram is equal to 1000 micrograms so these levels are equivalent to 4.0 µg/ml and 2.0 µg/ml in the US and 1 µg/ml for the IOC.
Antibiotic medications like amoxicillin or ampicillin have been misidentified as cocaine in some tests."
Also, the nail in the coffin for this subject is right here :
"The National Institute for Drug Abuse standard for a positive urine for illicit use of cocaine is: 1) a positive screening procedure with a threshold of detection at or above 300 ng/ml with a confirmation of the presence of benzoylecgonine above a threshold at or above 150 ng/ml using gas chromatography/mass spectroscopy"
42 NG/ML is NOT a positive for cocaine.
This article discusses passive cocaine exposure.
"we considered results positive only if results exceeded a cutoff of 50 ng/mL."
Even in a BABY, 42 NG/ML is NOT a positive result from passive exposure.
Consider this as well :
"cocaine threshold, 300 ng/mL"
Unless you are at 300 NG/ML the FBI does not consider this positive.
It's time for the Martina haters to shut up and apply logic and science to the matter.