**2.1 Criteria antiphospholipid antibodies**

Currently, there are three types of aPLs, depending on the detection method, which are included in the laboratory classification criteria for APS (**Table 1**).


#### **Table 1.**

*Clinical and laboratory criteria of definite antiphospholipid syndrome. APS is diagnosed when at least one of the following clinical criteria and one of the following laboratory criteria are met.*
