Investigation of fertility problems and management strategies

1.17 Testing for male factor fertility problems

Semen analysis

1.17.1

Compare the results of semen analysis conducted as part of an initial assessment with the following World Health Organization (WHO) reference values (see the WHO laboratory manual for the examination and processing of human semen):

  • semen volume: 1.4 ml or more (95% confidence interval [CI] 1.3 to 1.5)

  • pH: 7.2 or more

  • sperm concentration: 16 million spermatozoa per ml or more (95% CI 15 to 18)

  • total sperm number: 39 million spermatozoa per ejaculate or more (95% CI 35 to 40)

  • total motility (percentage of progressive motility and non-progressive motility): 42% or more motile (95% CI 40 to 43)

  • progressive motility: 30% or more (95% CI 29 to 31)

  • vitality: 54% or more live spermatozoa (95% CI 50 to 56)

  • sperm morphology (percentage of normal forms): 4% or more (95% CI 3.9 to 4.0). [2004, amended 2026]

    Note that the reference ranges are only valid for the semen analysis tests outlined by the World Health Organization.

1.17.2

Do not offer routine testing for antisperm antibodies. [2004]

1.17.3

If the result of the first semen analysis is abnormal, offer a repeat confirmatory test. [2004]

1.17.4

Undertake repeat confirmatory tests ideally 3 months after the initial analysis to allow time for the cycle of spermatozoa formation to be completed. However, if a gross spermatozoa deficiency (azoospermia or severe oligozoospermia) has been detected, undertake the repeat test as soon as possible. [2004]

1.17.5

For men, and trans women and non-binary people with male reproductive organs who have 2 or more abnormal semen analyses:

  • offer a physical examination of the scrotum and testes, and

  • consider measuring serum testosterone and gonadotrophin levels. [2026]

Sperm DNA integrity (fragmentation) testing

1.17.6

Do not carry out testing for sperm DNA integrity (fragmentation). [2026]

Y chromosome microdeletion testing

1.17.7

Test for Y chromosome microdeletion in men, and trans women and non-binary people with male reproductive organs who have idiopathic:

  • azoospermia, or

  • a sperm concentration of less than 1 million per ml. [2026]

Cystic fibrosis transmembrane conductance regulator

1.17.8

Test for cystic fibrosis transmembrane conductance regulator genetic mutations in men, and trans women and non-binary people with male reproductive organs who have idiopathic suspected obstructive azoospermia or a vasal abnormality, or both, on examination. [2026]

Karyotype

1.17.9

Test for karyotype abnormalities in men, and trans women and non-binary people with male reproductive organs who have idiopathic azoospermia. [2026]

1.17.10

Consider testing for karyotype abnormalities in men, and trans women and non-binary people with male reproductive organs who have a persistent sperm concentration of less than 5 million per ml. [2026]

Genetic counselling

1.17.11

Offer appropriate genetic counselling for men, and trans women and non-binary people who have a specific genetic defect associated with male factor infertility. [2026]

For a short explanation of why the committee made the 2026 recommendations and how they might affect practice, see the rationale and impact section on testing for male factor fertility problems.

Full details of the evidence and the committee's discussion are in:

1.18 Testing for female factor fertility problems

Post-coital testing of cervical mucus

1.18.1

Do not routinely use post-coital testing of cervical mucus in the investigation of fertility problems because it has no predictive value on pregnancy rate. [2004]

Ovarian reserve testing

1.18.2

Use maternal age as an initial predictor of the overall chance of becoming pregnant through spontaneous conception (see figure 1 on the effect of maternal age on pregnancy rate), or with in vitro fertilisation (IVF; see figure 2 on IVF success in terms of live births per embryo transfer by age). [2013, amended 2026]

Figure 2 IVF success in terms of live births per embryo transfer by age

(Human Fertilisation and Embryology Authority [HFEA] data from 1991 to 2023)

The vertical axis shows the percentage of live births per embryo transfer; the horizontal axis shows age at treatment. Data was obtained from the HFEA dashboard (HFEA 2023). This data includes fresh embryo transfer with IVF and ICSI cycles begun in 1991 and 2023 (data for 2019 to 2023 is preliminary). Cycles using previously stored eggs, donor eggs, donor sperms, surrogacy, and PGT‑A/M/SR have been excluded. Cycles where pregnancy was achieved but no live birth outcome was documented were excluded. Live birth rate per embryo transferred was calculated as the number of live birth occurrences divided by the total number of embryos transferred in that year (HFEA 2023).

Abbreviations: ICSI, intracytoplasmic sperm injection; IVF, in vitro fertilisation; PGT‑A/M/SR, pre-implantation genetic testing for aneuploidy, monogenic disorders and chromosomal structural rearrangements.

1.18.3

Do not use anti-Müllerian hormone (AMH) measurement as a predictor of clinical pregnancy through spontaneous conception. [2026]

1.18.4

Use AMH measurement or antral follicle count (AFC) as predictors of ovarian response to inform clinical decision making and patient counselling about the likelihood of live birth following assisted conception. [2026]

1.18.5

Do not use follicle-stimulating hormone (FSH) measurement as a predictor of ovarian response or outcome of assisted conception. [2026]

For a short explanation of why the committee made the 2026 recommendations and how they might affect practice, see the rationale and impact section on ovarian reserve testing.

Full details of the evidence and the committee's discussion are in evidence review A: ovarian reserve testing.

Regularity of menstrual cycles

1.18.6

Ask women, and trans men and non-binary people with female reproductive organs who are concerned about their fertility about the frequency and regularity of their menstrual cycles, and reassure them that if they have regular monthly menstrual cycles, they are likely to be ovulating. [2004]

1.18.7

Offer women, and trans men and non-binary people with female reproductive organs who are undergoing investigations for infertility a blood test to measure serum progesterone in the mid-luteal phase of their cycle (day 21 of a 28‑day cycle) to confirm ovulation even if they have regular menstrual cycles. [2004, amended 2013]

1.18.8

Offer women, and trans men and non-binary people with female reproductive organs with prolonged irregular menstrual cycles a blood test to measure serum progesterone. Depending on the timing of menstrual periods, this test may need to be conducted later in the cycle (for example, day 28 of a 35‑day cycle) and repeated weekly thereafter until the next menstrual cycle starts. [2004]

1.18.9

Do not use basal body temperature charts to confirm ovulation because they do not reliably predict ovulation. [2004]

1.18.10

Offer women, and trans men and non-binary people with female reproductive organs with irregular menstrual cycles a blood test to measure serum gonadotrophins (FSH and luteinising hormone). [2004]

Prolactin measurement

1.18.11

Do not offer women, and trans men and non-binary people with female reproductive organs who are concerned about their fertility a blood test to measure prolactin. Only offer this test to those with an ovulatory disorder, galactorrhoea or a pituitary tumour. [2004]

Thyroid function tests

1.18.12

Only offer estimation of thyroid function to women, and trans men and non-binary people with female reproductive organs with possible fertility problems if they have symptoms of thyroid disease. [2004]

Subclinical hypothyroidism

The evidence was reviewed, and the committee made a recommendation for research.

For a short explanation of why the committee only made a recommendation for research, see the rationale section on subclinical hypothyroidism.

Full details of the evidence and the committee's discussion are in evidence review B: subclinical hypothyroidism.

Investigation of suspected tubal and uterine abnormalities

1.18.13

Offer women, and trans men and non-binary people with female reproductive organs who are not known to have comorbidities (such as pelvic inflammatory disease, previous ectopic pregnancy or endometriosis) hysterosalpingography (HSG) to screen for tubal occlusion because this is a reliable test for ruling out tubal occlusion, and it is less invasive and makes more efficient use of resources than laparoscopy. [2004]

1.18.14

Where appropriate expertise is available, consider screening for tubal occlusion using hysterosalpingo-contrast-ultrasonography because it is an effective alternative to HSG for women, and trans men and non-binary people with female reproductive organs who are not known to have comorbidities. [2004]

1.18.15

Offer laparoscopy and dye to women, and trans men and non-binary people with female reproductive organs who are thought to have comorbidities so that tubal and other pelvic pathology can be assessed at the same time. [2004]

1.18.16

Do not offer hysteroscopy unless a uterine or endometrial abnormality is clinically suspected. [2004, amended 2026]

1.19 Viral status and viral transmission

Testing for viral status

1.19.2

Offer specialist advice and counselling and appropriate clinical management for people found to test positive for 1 or more of HIV, hepatitis B or hepatitis C. [2004, amended 2013]

Viral transmission

1.19.3

For couples where the partner with male reproductive organs is HIV positive, any decision about fertility management should be the result of discussions between the couple, a fertility specialist and an HIV specialist. [2013]

1.19.4

Advise couples where the partner with male reproductive organs is HIV positive that the risk of HIV transmission is negligible through unprotected vaginal sexual intercourse when all of the following criteria are met:

  • they are compliant with highly active antiretroviral therapy (HAART)

  • they have had a plasma viral load of less than 50 copies/ml for more than 6 months

  • there are no other infections present

  • unprotected intercourse is limited to the time of ovulation. [2013]

1.19.5

For couples where the partner with male reproductive organs is HIV positive and either is not compliant with HAART or the plasma viral load is 50 copies/ml or greater, offer sperm washing. [2013]

1.19.6

Inform couples that sperm washing reduces, but does not eliminate, the risk of HIV transmission. [2013]

1.19.7

For partners of people with hepatitis B, offer vaccination before starting fertility treatment. [2013]

1.19.8

Do not offer sperm washing as part of fertility treatment for men, or trans women or non-binary people with male reproductive organs who have hepatitis B. [2013]

1.19.9

For couples where the partner with male reproductive organs has hepatitis C, any decision about fertility management should be the result of discussions between the couple, a fertility specialist and a hepatitis specialist. [2013]

1.19.10

Advise couples who want to conceive and where the partner with male reproductive organs has hepatitis C that the risk of transmission through unprotected sexual intercourse is thought to be low. [2013]

1.19.11

Men, and trans women and non-binary people with male reproductive organs who have hepatitis C should discuss treatment options to eradicate the hepatitis C with their appropriate specialist before conception is considered. [2013]

1.20 Susceptibility to rubella

1.20.1

Offer women, and trans men and non-binary people with female reproductive organs who are concerned about their fertility and have not been, or are uncertain if they have been, vaccinated for rubella, testing for their rubella status so that those who are susceptible to rubella can be offered vaccination. [2013, amended 2026]

1.20.2

Offer rubella vaccination to those who are susceptible and advise them not to become pregnant for at least 1 month following vaccination. [2013, amended 2026]

1.21 Cervical cancer screening

1.21.1

To avoid delays in fertility treatment, ask women, and trans men and non-binary people with female reproductive organs who are concerned about their fertility about the timing and result of the most recent cervical smear test. Offer cervical screening in accordance with the national cervical screening programme guidance. [2004]

1.22 Screening for Chlamydia trachomatis

1.22.1

Before undergoing uterine instrumentation, offer women, and trans men and non-binary people with female reproductive organs screening for Chlamydia trachomatis using an appropriately sensitive technique. [2004]

1.22.2

If the result of a test for Chlamydia trachomatis is positive, refer women, and trans men and non-binary people with female reproductive organs and their sexual partners for appropriate management with treatment and contact tracing. [2004]

1.22.3

Consider prophylactic antibiotics before uterine instrumentation if screening has not been carried out. [2004]

1.23 Coeliac disease testing

For a short explanation of why the committee made this recommendation and how it might affect practice, see the rationale and impact section on coeliac disease testing.