Antistreptolysin O Titre (ASOT) - titre of (serum) antistreptolysin O antibodies; a blood test used to assist in the diagnosis of a streptococcal infection or indicate a past exposure to streptococci.

The ASOT helps direct the antimicrobial treatment and is used to assist in the diagnosis of rheumatic fever and post infectious glomeruonephritis.

A positive test is >100 unit/mL for preschoolers and >200 units/mL for others.^*

The false negatives rate is 20-30%. False positives can result from liver disease and tuberculosis.[http://www.gpnotebook.co.uk/cache/-1630535637.htm

See also

• List of medical abbreviations
• streptococcus

External links

• Antistreptococcal antibody titres - GPnotebook.co.uk.
• Antistreptolysin O Titer - medterms.com.
• Antistreptolysin O Titer, Serum
• Stretococcal antibody tests - healthAtoZ.com

Blood tests

ASO | Antistreptolizin O