Let me ask this question - because I'm spotting inconsistent stories here: If the O/P was stuck out in the middle of the ocean, how was he able to take a home test, particularly when he stated in his opening post that being out in the ocean, he had no access to home tests?

There is no way I can take a home test as im stuck in the middle of the ocean but I am stressing out here big time!!
And if the drug test was performed out in the middle of the ocean, how will the sample undergo a confirmation GC/MS test if an administrator were to misinterpret a faint line on an assay as a "positive"?

A positive result should never be susbstantiated on the sole basis of an assay, which has no ability to yield a quantitative value to seal the deal on the evidentiary front.