janet_rose
Posted : 6/10/2010 8:52:44 PM
jennie_c_d
Janet, do you know what the test is called and if it can be mail ordered, or has to be done through a vet?
I haven't found any name for the test other than measuring the testosterone level in the blood. A neutered dog should have levels much less than an intact dog.
I doubt the test can be done without the aid of a vet to draw some blood. Don't know if this is an in-office test or something the vet has to send off.
Did find this in answer to a person who had a dog whose neuter was "difficult" and which subsequently had "high" testosterone levels:
http://www.pets.ca/forum/showthread.php?t=54512
"Testosterone can come from three sources: testicular tissue, rarely adrenal tissue or exogenous source (testosterone cream or injectable). A testosterone-secreting tumor originates out of tissue that has the ability to secrete testosterone. So yes it both the theory of a retained testicle and a tumor are both plausible. The answer may be found through an evaluation of the testosterone level and some additional testing.
Each reference lab is a little different so I might be better be able to discuss his level if I know the units and the normal range for testosterone from your veterinarian's lab. If pg/ml then a normal intact dog (two testicles located in the s*c*ro*t*u*m) is 400-10000. A castrated dog would be at <50pg/ml. Some other laboratories go by different ranges. Often the laboratory has ranges for the various possibilities of cryptorchid states. Remember though, ranges are ranges as testosterone levels are by no means an exact means of diagnosis of anything other than the fact that testosterone is indeed in this pets system at the time of blood draw.
Typically the levels for a single retained cryptorchid testicle (one not locate in the ***) will be less than a intact male dog (one that has two testicles located in the ***). Some testicles will compensate for the loss of the other and might increase to a near normal level, but it would be not likely for it be higher than a normal intact dog range. Also if there was only 'part of the testicle' remaining, then it would be even more likely that it should be below a normal intact dog level. So if by the statement of the level being 'so high' means that it is higher than a normal intact dog, then I would tend to lean towards the interpretation of the original veterinarian and be concerned about a testosterone secreting tumor.
A talented ultrasonographer may be able to shed the light needed for this. Unfortunately either situation that have been proposed by the two vets requires surgery. Retained cryptorchid testicles have an approximately 80% chance of becoming a malignant tumor and testosterone secreting tumors should also be removed. It is possible that both vets are right too - there may have been retained testicular tissue which has become a tumor.
One note of the first veterinarian's surgery. For a normal anatomically gifted pet, the neuter surgery (castration) is not one given to leaving testicular tissue. Barring something very unusual, it would almost require an active decision to leave testicular tissue. Thus if testicular tissue was left behind then this would be a high suspicion for congenital deformation leading to the 'difficulty' of the neuter. Some dogs (and even people) can be born with an 'extra' testicle. The cells that are meant to become a testicle somehow get a little separated an a separate 'testicle' or testicular tissue forms. So however this occurs, I would not want the first veterinarian to be 'blamed' for something which likely would not be her/his fault.
Christopher A. Lee, D.V.M., C.V.L.S."
Note: In the case of my sister's dog the tumors secreted estrogen rather than testosterone. Over time the estrogen levels destroyed his bone marrow. Warning signs were that the dog developed large nipples and marked in the house - indicating both high estrogen levels and testosterone levels perhaps too high for a neutered dog.
ETA: Why is s*c*r*o*t*u*m a bad word?