Читать книгу Practical Guide to Diagnostic Parasitology - Lynne Shore Garcia - Страница 78

Patients who have received treatment for a protozoan infection should be checked 3 to 4 weeks after therapy, and those treated for Taenia infections should be checked 5 to 6 weeks after therapy; these recommendations have been used for many years. If the patient remains asymptomatic, the posttherapy specimens may not be collected, often as a cost containment measure. If the patient becomes symptomatic again, additional specimens can be submitted. If fecal immunoassays are ordered and parasites are present, the patient should be tested 7 to 10 days posttherapy. It usually takes approximately a week for antigen to be eliminated from the stool. It is important to remember that if the post-therapy specimens are collected too long after therapy, the presence of parasites or parasite antigen may represent a reinfection.