How to prepare
No special preparation is required. Fasting is not necessary. You can eat and drink normally before your blood draw.
After the test
Take your result to your GP or requesting practitioner. If a post-streptococcal complication such as rheumatic fever is suspected, further investigation and specialist referral may follow. Your doctor may recommend serial testing (repeating the ASOT two to four weeks later) to look for a rising titre pattern. Combining ASOT with an Anti-DNase B test can improve the overall sensitivity for detecting recent strep infections, particularly those originating from skin rather than throat.
Your test results will be available in your private dashboard. If there are any urgent issues, we'll let you know so you can follow up with your health professional.
Understanding results
ASOT is reported in IU/mL. Levels above the reference range (generally above 200 IU/mL in adults, though this varies by laboratory) may suggest recent streptococcal infection. A single elevated reading does not on its own indicate disease. Rising titres on repeat testing two to four weeks apart are more clinically significant than a single value. Some people, particularly children, naturally carry higher baseline titres. Your practitioner will interpret your result alongside your symptoms and clinical history.
