What do systematic reviews say?

RhCG vs uhCG

RhCG showed no clear difference in OHSS per woman ‐ moderate to severe OHSS compared with uhCG (low certainty).

• Recombinant versus urinary human chorionic gonadotrophin for final oocyte maturation triggering in IVF and ICSI cycles 2016 · Cochrane Headline outcomes only
  OR 1.76 [0.37, 8.45]
  3 studies · 417 participants
  Low