You can also have a blood test done, which gives an accurate figure relating to your testosterone level at the time of the test. (testogen.ca)
You may also have a blood test to find out if there are any hormone problems that could make it harder for you to cause a pregnancy. (plannedparenthood.org)
Your veterinarian must run a full thyroid panel and have the blood tested at a laboratory which uses canine thyroid values. (stca.biz)