Steroid isolation , depending on context, is the isolation of chemical matter required for chemical structure elucidation, derivitzation or degradation chemistry, biological testing, and other research needs (generally milligrams to grams, but often more  or the isolation of "analytical quantities" of the substance of interest (where the focus is on identifying and quantifying the substance (for example, in biological tissue or fluid). The amount isolated depends on the analytical method, but is generally less than one microgram.  [ page needed ] The methods of isolation to achieve the two scales of product are distinct, but include extraction , precipitation, adsorption , chromatography , and crystallization . In both cases, the isolated substance is purified to chemical homogeneity; combined separation and analytical methods, such as LC-MS , are chosen to be "orthogonal"—achieving their separations based on distinct modes of interaction between substance and isolating matrix—to detect a single species in the pure sample. Structure determination refers to the methods to determine the chemical structure of an isolated pure steroid, using an evolving array of chemical and physical methods which have included NMR and small-molecule crystallography .  :10–19 Methods of analysis overlap both of the above areas, emphasizing analytical methods to determining if a steroid is present in a mixture and determining its quantity. 
More specifically, the methylcobalamin form of B12 is recommended, as it has been shown to be the most effective. Taking B12 gives you a huge boost of energy while training, and more importantly, greatly helps your recovery.
Then, looking to cash in, Canseco brought the entire baseball universe to its knees. He ratted everyone out and people called him a liar. Love him or hate him, Jose was the realest of them all. Everybody from the fans to the commissioner were guilty. The higher-ups allowed the steroid culture to exist for that green piece of paper and they'll be lying if they said different. Case in point: Major League Baseball began testing for steroids for the first time in 2003 under guidelines in which the results were to remain anonymous with no penalties imposed. What type of soft shit is that? If none of these players on this list are allowed in Cooperstown , neither should any of the managers or the execs that were associated with them, especially Bud Selig .