Device and method for deter-mininga rheological property, such as viscosityor threadability, of mucus comprising a housing(2) having a circumferential surface defining anopening (6) for receiving a quantity of the mu-cus (16),a probe (8) extending within the hous-ingand having a tip (10) for contacting at leasta portion of the quantity of mucus, a displace-mentmechanism (12) for displacing the tip ofthe probe with respect to the housing, and ameasurement unit (14) for measuring a dis-placementof the tip of the probe. The deviceand method are especially suitable for deter-miningthe rheological property of mammal cer-vicalmucus for determining female fertility.
