I'm only going to address one Rhino here, as I'm convinced you both are the same party.
Literature re: dosage admin created via GH manufacturers are as such, i.e. SC dosing soley, is
the accepted form of administration, though not due to superior performance!
By practice, the medical field schools intravenous administration. But it's not soley to avoid injecting air. Au contraire. In fact, it's common that
small amounts of air often get into the blood accidentally during surgery and other medical procedures (for example a bubble entering an intravenous fluid line). No, the real issue is hitting the vein! This takes some serious practice, though probably not to much on most individuals, however there's plenty of people you'd swear have no viens whatsoever!
Even these must receive medical attention if needed.
Worse, can you imagine the pharmacies trying to school GH patients on how to admin I.V.? That I'd like to see. Further, some simply can't stomach the idea. Most, especially children, which is what GH was intially formulated for, simply want the simplest method available. No blood (some freak on the sight of) and IF some youngin decided to dose an empty, already used cartridge, there would be hell to pay for the drug companies.
I do and have for more than a year, sometimes as much as 3x daily. This varies though. Time off is crucial too - not for the veins sake, but for effectiveness.
Yes, death may occur if a large bubble becomes lodged in the heart. 200mcg has this potential. Though who in their right mind is going to inject an empty syringe into their vein? If that's a possibility, I'd surely stick with SC/IM.