Chlamydia Ab, Chlamydia Ab CFT
3 – 5 mL plain blood. Send paired sera taken two weeks apart for rising titre.
Refrigerate samples if delay in transporting to laboratory is anticipated. Do not freeze.
Complement Fixation Test (CFT)
Significant result: ≥ 4 fold rise in titre by CFT in paired sera
1 – 6 days after acute or convalescent serum is received
Tuesday and Thursday