Tests and Limitations of Commonly performed diagnostic tests
Ultrasonography — It's accuracy is dependent on the size and location of the ovarian remnant or cryptorchid testis and on the sonographer's skill level. Vaginal Cytology — May be useful only if the animal presents during late proestrus or estrus. LH — A single high LH test will not confirm spay status. False positives can occur around the time of ovulation and retesting is recommended, which can be expensive. Stimulation Testing — Dynamic testing is costly and requires multiple blood tests.
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