Rc. Rotteveel et al., THE INFLUENCE OF ORAL-CONTRACEPTIVES ON THE TIME-INTEGRAL OF THROMBINGENERATION (THROMBIN POTENTIAL), Thrombosis and haemostasis, 70(6), 1993, pp. 959-962
The thrombin potential (TP) has been defined as the time integral of (
i.e. the area under) the thrombin generation curve. It has been shown
that this parameter decreases with all types of anticoagulant treatmen
t and increases with ATIII deficiency. We evaluated the use of this pa
rameter for detection of the hypercoagulative state known to accompany
oral contraception. In fresh frozen control plasma the TP could be de
termined with high reproducibility (n = 82, c.v. 2.9%). The TP was lin
early diminished by mixing fresh frozen plasma with prothrombin defici
ent plasma while a high coefficient of correlation was observed (r = 0
.997). Women using oral contraceptives showed a significantly (p <0.00
01) higher TP (TP = 569 nM.min, SD = 55, n = 17), compared to men or,
to women not using oral contraceptives (TP = 484 nM.min, SD = 52, n =
41). This suggests that the thrombin potential indicates the prethromb
otic state known to exist in women using oral contraceptives.