Table 1.
Gestational age-specific D-dimer reference intervals.
| 2.5th percentile (90% CI) |
97.5th percentile (90% CI) |
Samples (n) | Outliers (n) | |
|---|---|---|---|---|
| 1st trimester Gestational weeks <15 |
0.2
(0.2-0.2) |
0.9
(0.8–0.9) |
222 | 13 |
| 2nd trimester Gestational weeks 15–27 |
0.2
(0.2-0.2) |
1.5
(1.4–1.6) |
1412 | 12 |
| 3rd trimester Gestational weeks >27 |
0.4
(0.4–0.5) |
2.8
(2.6–3.1) |
971 | 20 |
The 2.5th and 97.5th percentiles (bold) with 90% confidence intervals (in brackets) are given. Outliers were removed using Horn's algorithm with a fence factor of 1.5.