Oil & Gas UK (OGUK) Offshore Medical including Chester Step Test

  • Every offshore worker must undergo and pass an Oil & Gas UK (OGUK) Offshore Medical examination.
  • For UK waters and the North Sea, physicians who are approved by the United Kingdom Offshore Operators Association (UKOOA) Health Advisory
    Committee should carry out the examination and issue certificates.
  • The offshore medical certificate, as it is commonly known, is controlled by UKOOA and renewals are necessary every 2 years irrespective of the age of the offshore worker.
  • Individual operators retain the right to request medical assessments more frequently.

Offshore personnel may also be nominated by their company or sponsor to complete a Chester Step Test for their job role.

OGUK Offshore Medical Content

An OGUK Offshore Medical covers a range of topics essential under OGUK requirements including;

  • Completion of a patient questionnaire
  • Urinalysis
  • Calculation of Body Mass Index (BMI)
  • Near distance and colour vision
  • Pulse and blood pressure measurement
  • Lung function test (peak flow)
  • Audiogram (hearing test)
  • Consultation with a doctor

Chester Step Test

  • A Chester Step Test includes;
  1. Consultation with a health professional
  2. Completion of the Chester Step Test
  3. Report compiled on the test findings


  • There are no prerequisites for an OGUK Offshore Medical and Chester Step Test


  • Our in-house doctor will issue aOGUK medical certificate of fitness upon successful completion of your medical.


  • Medicals will have to be undertaken every 2 years and Chester Step Test certificate to be renewed every year

Items to bring

  • If you are currently on any medication, please bring these with you for the attention of the doctor.


OGUK medical certificate – valid for 2 years and Chester Step Test certificate to be renewed every year


A good standard of fitness is required


A good standard of fitness is required