TABLE 1.
Results of six different tests for detection of specific antibodies to T. gondii for 126 serum specimens from 27 pregnant womena
| No. of wksb (no. of serum specimens) | Median (range) for antibody level measured with:
|
|||||
|---|---|---|---|---|---|---|
| Dye test (IU/ml) | Platelia Toxo-IgG (IU/ml) | Toxo-Screen DA IgG (titer) | Platelia Toxo-IgM (%) | Toxo-ISAGA IgM (index) | Platelia Toxo-IgA (%) | |
| 1 (14) | 12 (3–50) | 0 (0–4) | 20 (0–180) | 195 (57–371) | 11 (7–12) | 62 (28–442) |
| 2 (13) | 50 (12–100) | 13 (6–26) | 120 (40–540) | 379 (121–764) | 11.5 (6–12) | 204c (49–443) |
| 3 (6) | 100 (50–200) | 33 (9–58) | 1,620 (40–4,000) | 358 (185–495) | 12 (9–12) | 117 (91–901) |
| 4 (10) | 100 (6–1,600) | 17 (2–488) | 180 (40–6,000) | 360 (115–602) | 12 (10–12) | 104 (42–976) |
| 5 (9) | 400 (12–800) | 48 (5–192) | 1,620 (60–6,000) | 371 (144–469) | 12 (4–12) | 164d (48–509) |
| 6–10 (22) | 400 (25–6,400) | 65 (14–2,331) | 6,000 (180–54,000) | 354 (85–758) | 11.5 (9–12) | 199 (48–660) |
| 11–15 (13) | 400 (25–800) | 78 (27–1,067) | 6,000 (180–54,000) | 318 (95–450) | 12 (1–12) | 125 (53–424) |
| 16–20 (10) | 400 (25–800) | 197 (33–2,168) | 18,000 (1,620–54,000) | 270 (116–430) | 12 (5–12) | 190 (66–373) |
| 21–52 (29) | 200 (12–1,600) | 66 (4–2,500) | 6,000 (180–54,000) | 194 (83–405) | 11 (0–12) | 67 (24–577) |
a
The assays are described in Materials and Methods.
b
Number of weeks elapsed after the estimated time of acquisition of infection.
c
Eleven specimens were examined.
d
Seven specimens were examined.