You will need to wait a few months. The earliest they like to test for CAE is 6 months... but 8 months is better.
Johnes if by serum they say 18 months
CL generally 6 months is when most will... that one I am not sure if there is an actual age set.
We test for CAE, Johnes, CL
We buy from tested herds, unfortunately many do not test for all 3. When we bring in a goat it goes into quarantine for 30-60 days. We draw blood send it out and test the animal for all 3. Of course this only applies if they are 6 months or older. We prefer the 8 month range and we do include the Johnes anyway even though they are officially too young.
We don't buy goats as babies from herds that do not test for all 3.
We also try not to buy from herds that cycle in and out animals constantly.
For goats new to our herd that are adults we get a copy of the test paperwork. If it is a herd new to testing then we repeat the CAE before breeding the doe and just before kidding.
1 test, 1 time is only a start so to speak. Understanding how the testing works, cut off #'s, titers etc is all important... the point is testing yearly (whole herd) gives you a better idea of where your herd is.
If you have tested negative for 4, 5, or so, consecutive years and no goats added in ( closed herd) and you do not ever take your goats off your property than you at least can feel pretty confident that your goats are free of these diseases.
That was also a great run on sentence.
You will greatly benefit from testing. We test all goats, registered and unregistered. We want the same standard of health and care for all our goats.
We draw our own blood and send it in to our state lab... they do have to send out the CL test to UC Davis so we pay an out of state fee for CL @ $14.50 test. ( that is our costliest test) But the CAE is $1.50 and Johnes is $1.50. Out of state pays $3 for each of those test.
IMO no excuse not to test. Often it is finding a vet in your region that will charge a reasonable price to draw the blood if you can't do it yourself. Many vets will come out and teach you so that you can do those routine test yourself.