Appointments for semen analysis are between 9am and 4pm on Mondays, Tuesdays, Wednesdays and Fridays. Please call 0203 447 9436 to make an appointment. If you are already registered as a patient at this hospital please have your hospital number to hand. If you are not registered as a patient please bear in mind that we will need to register you over the phone. 

Note that there is high demand for appointments for semen analysis – please ensure that you are on time for your appointment. You must bring your semen analysis referral form to your appointmentWe cannot see you if you do not have a valid referral form from your doctor. At the time of your appointment please ensure you have abstained from sexual intercourse/ejaculation for between three and five days.

Once here we will endeavour to see you as quickly as possible. You will not have a consultation during this appointment. We will supply you with a sterile specimen pot and ask you to write your name and date of birth on the pot. You will also be asked to complete a production form. When there is a private production room available for you, we will show you to the room and advise you where to deliver your sample for analysis. 

In order for your sample to be representative, we ask that the sample is produced by masturbation, and you may wish to bring your own appropriate illustrated material or DVD, to the appointment. You are welcome to bring your partner to your appointment and to accompany you to produce the sample if you wish. Please do not use lubricants/spermicidal condoms/withdrawal method to produce your sample as these can interfere with the results, making your analysis inaccurate. Once you have delivered your sample to the laboratory you are free to leave; the results will be returned to your referring doctor.

If you have difficulty producing a sample at the clinic it is possible to produce a sample off site and bring it to us. If you intend to produce a sample off site you must make prior arrangements with us. In addition, the sample must be kept at body temperature and delivered to the clinic within an hour of production accompanied by a signed production form.

The results of your semen analysis will be returned to your referring doctor. If your referrer is based at UCLH, they will have the results available to them at your next appointment. If your referrer is at another hospital or a GP surgery, please allow ten days for the results to reach the doctor before you contact them to discuss. Please do not contact the laboratory regarding the results as staff will not be able to give you any results either in person or via the telephone.

A semen analysis is an assessment of various aspects of a man’s sperm and semen. The aim is to identify any factors that may be influencing your fertility, and you doctor may request this for a number of reasons, for example:

  • To investigate difficulties conceiving
  • To determine fertility treatment suitability
  • To confirm success of a procedure e.g. vasectomy/vasectomy reversal
  • To assess effects of other procedures on fertility e.g. post-chemotherapy or surgery

Semen samples from the same man can vary greatly, and your doctor may request repeats tests in order to confirm the results.

The World Health Organisation has published ‘reference values’ for each of the parameters examined during a semen analysis. The values are based on the results seen in men who have achieved a pregnancy within 12 months of ceasing contraception. Values outside of these ranges do not necessarily mean that you are infertile, but can indicate potential difficulties in achieving a pregnancy.

The table below is taken from the World Health Organisation publication (2010). The figures in bold are used as the ‘reference values’ for what might be considered ‘normal’. In fact, the different semen parameters need to be considered in relation to each other and there are no strict cut-offs for what is ‘normal’ or ‘fertile’. Your doctor can help you to understand your results.

 

Semen Parameter

Centile

2.5

5

10

25

50

75

90

95

97.5

Semen Volume (ml)

1.2

1.5

2.0

2.7

3.7

4.8

6.0

6.8

7.6

Sperm Concentration (millions / ml)

9

15

22

41

73

116

169

213

259

Total Sperm Number (millions / ejaculate)

23

39

69

142

255

422

647

802

928

Total Motility (%)

34

40

45

53

61

69

75

78

81

Progressive Motility (%)

28

32

39

47

55

62

69

72

75

Sperm with Normal Morphology (%)

3

4

5.5

9

15

24.5

36

44

48

Antisperm Antibodies

Consensus value: >50% binding in MAR test could indicate immunological impact on fertility