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Clinical Biochemistry

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Also known as: P4

Specimen requirements

Sample type: Serum (Serum)

Collection requirements: No special requirements


Price on application

Turnaround time

Please see Turnaround times

Analytical method


Analysis undertaken at these site(s)

  • John Radcliffe Hospital
  • Horton General Hospital

Reference intervals

Men <2 nmol/L


Post-menopausal/follicular phase progesterone: <2 nmol/L

Luteal phase progesterone of >25 nmol/L usually indicates ovulation