PSA Test in South Africa: When and How Often

South Africa's prostate screening guidelines suggest men choosing screening start PSA (prostate-specific antigen) testing at 50, at 45 if Black African or if a parent, sibling or child had prostate or breast cancer, and at 40 for certain gene carriers. After a normal result, retest in two years if PSA is below 1 ng/mL (nanograms per millilitre), otherwise yearly [1].

You can weigh up that choice in a doctor-led cancer prevention consultation that matches screening to your age, family history and lifestyle.

At a glance

• If you choose screening, start at 50, or at 45 or 40 if your risk is higher.
• Retest every one or two years, depending on your last result, until about 70.
• A mildly raised result is usually repeated first; a urologist decides on any MRI or biopsy.

What Is a PSA Test, and Who Is It For?

A PSA test is a blood test for prostate-specific antigen, a protein made by the prostate gland. PSA can rise with cancer, benign prostate enlargement or inflammation of the prostate (prostatitis), so a result alone is not a diagnosis [1, 2].

The guidelines, from the South African Urological Association and the Prostate Cancer Foundation of South Africa, apply only to men without symptoms [1].

Symptoms such as a weak stream, passing urine more often at night, or blood in your urine or semen call for a medical assessment, not screening; causes include benign prostate enlargement and infection. If you suddenly cannot pass urine, seek urgent care.

At What Age Should You Start PSA Testing in South Africa?

Under South Africa's guidelines, informed men without symptoms can start PSA testing at 50, at 45 if they are Black African or have a parent, sibling or child with prostate or breast cancer, or at 40 if they carry certain gene changes [1].

• From 45: Black African men, and men whose parent, sibling or child had prostate or breast cancer.
• From 40: known carriers of a BRCA2, BRCA1, HOXB13, ATM or CHEK2 gene change, or 10 years before the youngest affected relative's age at diagnosis if that was before 40.

The guidelines note that Black South African men are typically diagnosed at a later stage, with higher-grade cancer, than other South African men [1].

You can read more about how a structured cancer risk assessment weighs family history, smoking and alcohol across several cancers.

How Often Should You Have a PSA Test?

PSA retesting has no fixed yearly rule: South Africa's guidelines suggest waiting two years if your last PSA was below 1 ng/mL, and one year if it was higher but still normal for your age [1].

• 45 to 49: below 1, two years; 1 to 2.5, one year.
• 50 to 59: below 1, two years; 1 to 3.5, one year.
• 60 to 70: below 1, two years; 1 to 4.5, one year.

Gene carriers starting at 40 have their interval set by their doctor [1]. Testing usually stops after 70 or when life expectancy is under 10 years, though a man in excellent health at 70 can still discuss it [1].

International guidelines allow up to eight years between tests for some men, but South Africa's favour more frequent testing, partly because Black African men have been under-represented in trials [1].

PSA testing is one part of what is worth monitoring in your 40s and 50s, from blood pressure to age-appropriate cancer screening.

What Is a Normal PSA Level by Age?

South Africa's guidelines use age-specific upper limits, because PSA rises with age: 2.5 ng/mL at 40 to 49, 3.5 ng/mL at 50 to 59 and 4.5 ng/mL at 60 to 70, alongside the general cut-off of 4 ng/mL [1].

A result within range does not rule out cancer, and one above it does not confirm it; your doctor reads it in context.

Can Cycling, Ejaculation or Medicines Affect Your PSA Result?

Ejaculation can briefly raise PSA and some prostate and hair-loss medicines roughly halve it, while evidence that cycling raises it is mixed [1, 3, 4, 5].

Ejaculation and Cycling

In a Urology study of 64 men, PSA rose after ejaculation in 87%, and 97% were back to baseline within 48 hours; the authors advised 48 hours without ejaculation before any PSA test [3].

A systematic review in Prostate Cancer and Prostatic Diseases, pooling six studies, found no significant average rise after cycling, though the evidence is limited [4]. Before a repeat test, the guidelines still suggest 48 hours without ejaculation or cycling, which may mean two days off the bike for Cape Town cyclists [1].

When to Postpone a PSA Test

The guidelines suggest waiting 6 to 8 weeks after bacterial prostatitis settles, and 6 weeks after urinary retention (being unable to pass urine), a catheter or bladder scope, or prostate surgery through the urethra (the urine tube) [1].

Medicines That Lower PSA

Finasteride and dutasteride (5-alpha-reductase inhibitors), used for an enlarged prostate, roughly halve PSA after 6 to 12 months, so the guidelines advise doubling the reading [1]. A Lancet Oncology trial found a similar fall with the lower finasteride dose used for hair loss [5].

Tell your doctor if you take either; never stop one without their advice.

What Does a Raised PSA Mean, and What Happens Next?

A raised PSA is a reason to look more closely, not a diagnosis. For men without symptoms, the guidelines recommend repeating a result that is raised but below 10 ng/mL, the 'grey zone', provided any rectal examination was normal [1].

This is why a single borderline blood result is often repeated and read in context before anyone acts on it. For a grey-zone result:

1. Repeat the test after at least 48 hours without ejaculation or cycling [1].
2. See a urologist (a urinary tract specialist) if PSA stays above your age range or a rectal examination is abnormal [1].

For a result of 10 ng/mL or more, your doctor will discuss referral.

Why an MRI May Come Before a Prostate Biopsy

A biopsy takes small tissue samples to confirm a diagnosis; the guidelines leave this to the urologist [1], who may arrange an MRI first. In the PRECISION trial of 500 men with suspected prostate cancer and no previous biopsy, 28% of the MRI group avoided biopsy after a non-suspicious scan [6].

The MRI approach also found more clinically significant cancers, those more likely to need treatment (38% vs 26%), and fewer insignificant ones than standard biopsy [6].

Is a Rectal Examination Still Needed for Prostate Screening?

For men without symptoms, a routine rectal examination may not be needed. South Africa's guidelines use the PSA blood test first and note that routine digital rectal examination (DRE), a gloved-finger check of the prostate, could be omitted in primary care [1].

A European Urology Oncology meta-analysis of eight studies with 85,798 participants found that adding DRE to PSA did not improve cancer detection [7]. DRE still matters if you have symptoms, and an abnormal finding prompts referral [1].

What Are the Pros and Cons of PSA Testing?

PSA screening can lower the chance of dying from prostate cancer, but the benefit for any one man is small, and false alarms, biopsies and overtreatment are possible, so it should be an informed, shared decision [1, 2].

Possible Benefits

The European Randomized Study of Screening for Prostate Cancer (ERSPC) followed 162,236 men aged 55 to 69 for a median of 23 years. Men invited for PSA testing had a 13% lower rate of prostate cancer death: an absolute reduction of 0.22%, or one death prevented per 456 men invited [8].

Possible Harms

• Prostate cancer was diagnosed about 30% more often in the invited group: for each death averted, about 12 additional men were diagnosed [8].
• The US Preventive Services Task Force (USPSTF) estimates that 20% to 50% of men diagnosed through screening may be overdiagnosed, meaning their cancer would never have caused symptoms in their lifetime [2].
• In one major trial of men screened every 2 to 4 years, over 15% had at least one false-positive result within 10 years; about 1% of biopsies lead to complications needing hospital care [2].
• After surgery to remove the prostate, about 1 in 5 men have long-term urine leakage and about 2 in 3 have long-term erection problems [2].

Book a Doctor-Led Prostate Screening Discussion in Cape Town

A consultation can help you decide whether, and how often, to test, and what a result means.

As a multidisciplinary medical centre for every stage of your health, Fluid Medical brings Preventative & Longevity Medicine and General Healthcare for Men & Women together in Gardens, so screening decisions take in your full history.

Your doctor may request a PSA test during an in-depth consultation that reviews your history and medicines and can coordinate a specialist referral, or within a longevity consultation that folds age-appropriate screening into a longer-term plan for your health.

You can book a consultation with a Fluid Medical doctor in Gardens online, call 021 200 2121 or WhatsApp 076 577 9287.

This article is general health information and does not replace a consultation with a doctor.

References

[1] John J, Adam A, Kaestner L, Spies P, Mutambirwa S, Lazarus J. The South African Prostate Cancer Screening Guidelines. S Afr Med J. 2024;114(5):e2194. doi:10.7196/SAMJ.2024.v114i5.2194. https://scielo.org.za/scielo.php?script=sci_arttext&pid=S0256-95742024000500007

[2] US Preventive Services Task Force. Final recommendation statement: prostate cancer: screening [Internet]. Rockville (MD): USPSTF; 2018 May 8 [cited 2026 Oct 11]. Also published as: Grossman DC, Curry SJ, Owens DK, Bibbins-Domingo K, Caughey AB, Davidson KW, et al. JAMA. 2018;319(18):1901-13. doi:10.1001/jama.2018.3710. https://www.uspreventiveservicestaskforce.org/uspstf/recommendation/prostate-cancer-screening

[3] Tchetgen MB, Song JT, Strawderman M, Jacobsen SJ, Oesterling JE. Ejaculation increases the serum prostate-specific antigen concentration. Urology. 1996;47(4):511-6. doi:10.1016/S0090-4295(99)80486-5. https://pubmed.ncbi.nlm.nih.gov/8638359/

[4] Jiandani D, Randhawa A, Brown RE, Hamilton R, Matthew AG, Kuk JL, et al. The effect of bicycling on PSA levels: a systematic review and meta-analysis. Prostate Cancer Prostatic Dis. 2015;18(3):208-12. doi:10.1038/pcan.2015.16. https://pubmed.ncbi.nlm.nih.gov/25939515/

[5] D'Amico AV, Roehrborn CG. Effect of 1 mg/day finasteride on concentrations of serum prostate-specific antigen in men with androgenic alopecia: a randomised controlled trial. Lancet Oncol. 2007;8(1):21-5. doi:10.1016/S1470-2045(06)70981-0. https://pubmed.ncbi.nlm.nih.gov/17196507/

[6] Kasivisvanathan V, Rannikko AS, Borghi M, Panebianco V, Mynderse LA, Vaarala MH, et al. MRI-targeted or standard biopsy for prostate-cancer diagnosis. N Engl J Med. 2018;378(19):1767-77. doi:10.1056/NEJMoa1801993. https://pubmed.ncbi.nlm.nih.gov/29552975/

[7] Matsukawa A, Yanagisawa T, Bekku K, Kardoust Parizi M, Laukhtina E, Klemm J, et al. Comparing the performance of digital rectal examination and prostate-specific antigen as a screening test for prostate cancer: a systematic review and meta-analysis. Eur Urol Oncol. 2024;7(4):697-704. doi:10.1016/j.euo.2023.12.005. https://pubmed.ncbi.nlm.nih.gov/38182488/

[8] Roobol MJ, de Vos II, Månsson M, Godtman RA, Talala KM, den Hond E, et al. European Study of Prostate Cancer Screening - 23-year follow-up. N Engl J Med. 2025;393(17):1669-80. doi:10.1056/NEJMoa2503223. Erratum in: N Engl J Med. 2026;394(11):1144. https://pubmed.ncbi.nlm.nih.gov/41160819/