The Villages Labs, now called Alliance Labs, will do some blood tests (and other tests) without doctors orders if you wish to self pay.
Here's a link to the order form:
http://www.cfhalliance.org/pdf/lab-p...althscreen.pdf
I used the Lake Sumter lab on my own once for bloodwork when I was experimenting with discontinuing cholesterol meds.
They are efficient and charges seem reasonable to me.
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Maryland (DC Suburbs) - first 51 years

The Villages - next 51 years