Yes, the Antiphospholipid Antibody IgG test can be used to track the progress of Antiphospholipid Syndrome (APS) treatment. Following the initial diagnosis, doctors may order follow-up tests at regular intervals to monitor therapy effectiveness. A decrease in IgG antibodies against phospholipids over time may suggest that treatment is effective. To determine the overall treatment efficacy, the test results are considered, along with the patient's clinical symptoms and other relevant lab test results.