Pregnancy of Unknown Location (PUL)
Positive test + TVUS without location: follow until definitive diagnosis. Based on NICE NG126 (2023).
PUL is not a diagnosis
It is a transient condition that may evolve into:
- •Viable intrauterine pregnancy
- •Non-viable intrauterine pregnancy (early miscarriage)
- •Ectopic pregnancy
- •Spontaneous resolution (biochemical pregnancy): pregnancy detected only by β‑hCG, not visualised on ultrasound and resolving spontaneously.