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Thanks for your answers folks and I apologise for my error. My daily dose is 135 mgs - not mls !
The needle is about 0.5 inches long and the injection is given subcutaneously, in the abdominal area or thigh - not into a vein It is virtually painless although there is a slight after-sting which lasts about a minute.
Yes, Tilly, I was shown how to inject myself but not how to expel any surplus correctly. The Clexane info link which Chris( Buenchico) kindly provided explains that the needle should be held point downwards to retain the air bubble, so problem solved !
Thanks again.
D