Strategies for Diagnosis and Prevention of Venous Thromboembolism during Pregnancy

Table 3

Plasma D-dimer levels during pregnancy.

D-dimer (plasma)
Units	Adult	First trimester	Second trimester	Third trimester
μg/mL	<0.5	0.05–0.95	0.32–1.29	0.13–1.7
μg/L ng/mL	<500	50–950	320–1290	130–1700
nmol/L	<2.7	0.3–5.2	1.8–7.1	0.7–9.3