Changes in Bleeding and Clotting During the Menstrual Cycle

Withdrawn before enrolling

Conditions studied: Von Willebrand's Disorder, Healthy

In brief

Indirect evidence suggests that hormonal fluctuations during the menstrual cycle also affect the bleeding and clotting system. This study looks at two sensitive laboratory tests at four time points during the menstrual cycle to determine if there is a natural variation in coagulation and platelet function. Laboratory tests in healthy subjects will be compared to women with von Willebrand's disorder type 1, a bleeding disorder. In the future, these laboratory tests may help in the diagnosis of bleeding and clotting disorders and to design treatments for women with abnormal menstrual bleeding.

Key facts

Study ID

NCT00480545

Run by

The University of Texas Health Science Center, Houston

People needed

0

Starts

2005-10-01

Expected to finish

2011-05-01

Last updated by the study team

2014-12-05

Who can join

Age: 18 and older, up to 50. Sex: female. Healthy volunteers: accepted.

You may qualify if…

• Must be female
• Aged 18 to 50 years, with regular menstrual cycles.
• Healthy volunteers and women with von Willebrand's disorder are both being recruited.

You may not qualify if…

• Pregnancy
• Use of hormonal therapy including birth control pills
• Use of hemostatic agents such as DDAVP or anti-platelet agents.

Where it is running

• University of Texas Health Science Center at Houston — Houston, Texas, United States

Full record on ClinicalTrials.gov

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