TABLE 5.
Discrepant results obtained in 17 of 200 syphilis serum specimens
| Sample no. | Syphilis stagea | Result
|
|||
|---|---|---|---|---|---|
| recWB | wclWB | MHA-TPb | FTA-ABSb | ||
| 15 | Primary | Positive | Positive | Negc | 40 |
| 28 | Primary | Positive | Positive | Neg | 20 |
| 34 | Primary | Positive | Positive | Neg | 20 |
| 39 | Primary | Positive | Positive | Neg | 40 |
| 41 | Primary | Positive | Positive | Neg | 80 |
| 45 | Primary | Positive | Positive | Neg | 40 |
| 53 | Primary | Positive | Positive | Neg | 40 |
| 61 | Primary | Negative | Positive | Neg | 20 |
| 68 | Primary | Negative | Positive | Neg | 40 |
| 69 | Primary | Positive | Negative | 80 | Neg |
| 71 | Primary | Positive | Negative | 160 | Neg |
| 73 | Primary | Negative | Negative | 80 | Neg |
| 85 | Secondary | Positive | Positive | Neg | 160 |
| 102 | Secondary | Negative | Negative | 80 | Neg |
| 157 | Latent | Negative | Negative | 160 | 40 |
| 169 | Latent | Positive | Negative | 160 | 80 |
| 183 | Latent | Negative | Positive | 80 | Neg |
a
All samples belonging to the primary syphilis group were from patients with a genital ulcer lasting more than 21 days with the exception of sample no. 53, 61, and 73, which were obtained from subjects with a chancre lasting less than 3 weeks.
b
Results are expressed as titers.
c
Neg, titers of less than 80 (MHA-TP) or 20 (FTA-ABS).