<p><strong>Drng &amp; other interactions:</strong>&nbsp;No clinically significant drug interactions have been reported during hCG therapy. Following administration, Ovidrel (choriogonadotrophin alfa) may interfere for up to ten days with the immunological determination of serum/urinary hCG, leading to a false positive pregnancy test. During Ovidrel therapy, a minor thyroid stimulation is possible of which the clinical relevance is unknown.</p>