Ultrasound enhancement of Neisseria meningitidis serogroup detection using Slidex meningite and Wellcogen latex agglutination reagents
| Standard test card limit (ng/ml)† | Ultrasound enhanced limit (ng/ml) | Ultrasonic improvement | ||||
|---|---|---|---|---|---|---|
| Serogroup* | Slidex meningite | Wellcogen | Slidex meningite | Wellcogen | Slidex meningite | Wellcogen |
| *Serogroup C polysaccharide was detected in the deoxyacetylated (CO−) and and acetylated forms (CO+); †expressed as the lowest antigen concentration (ng/ml) to yield a positive agglutination. | ||||||
| A | 30.50 | 61.00 | 0.48 | 0.95 | ×64 | ×64 |
| B | 244.00 | 244.00 | 15.25 | 7.60 | ×16 | ×32 |
| CO− | 244.00 | 244.00 | 7.60 | 7.60 | ×32 | ×32 |
| CO+ | 244.00 | 490.00 | 15.25 | 15.25 | ×16 | ×32 |