I travel quite a bit and have never had a problem carrying my
medication, syringes, etc.  However, a couple of things I do to make
sure there aren't any problems if questioned is carry a note from my
Dr. that simply explains I am a T1 diabetic and need to travel with a
glucose meter, insulin, etc.  Because I'm overly cautious I also take
a prescription label (from my medication) that has information on
it.

Here is a diabetes "blog" that has a lot of information on it specific
to travelling:

http://diabetes.blog.com/956117/

Happy trails.

Kurt

From the source:
http://www.tsa.gov/travelers/airtravel/specialneeds/index.shtm

Note in the table "Disability-related items permitted
through the security checkpoint include:

"All diabetes related medication, equipment, and supplies"

If you're concerned (TSA staff are not renowned for their
knowledge of such niceties) print out the relevant sections
and carry a copy with you.

If you are crossing international borders, always carry a
doctor's letter noting your medication needs; I also carry
prescription forms signed by the doctor for each med. This
assists with those countries which have strict limits on the
quantity of meds allowed in.

Actually, that doctor's letter may be useful support if you
are faced with a US TSA twit as well.

Cheers, Alan, T2, Australia.
d&e, metformin 1500mg, ezetrol 10mg
Everything in Moderation - Except Laughter.
--
http://loraltraveloz.blogspot.com/
latest: Mossman Gorge in the Daintree Rainforest
http://loraldiabetes.blogspot.com/
latest: Self-Testing and Type 2 Management

You didn't say where in the world you are flying, but if its within the
United States, check http://www.tsa.gov for information or contact your
airline.