Low Libido Blood Test (Men)
10 Biomarkers | Venous or Capillary Blood Test | CE-marked | UKAS-accredited | Doctor-reviewed results with personalised interpretation.
A male hormone profile checking testosterone, free testosterone, SHBG, DHEA-S, FSH, LH, prolactin and oestradiol. Designed for men wanting a detailed hormone balance check, this test gives clear, clinically reviewed insight so you can understand your results and know what to do next.
Results are typically available within 2 working days from when your sample reaches the laboratory (excluding weekends and bank holidays).
Protein Status
- Albumin
Male / Reproductive Hormones
- Follicle Stimulating Hormone
- Luteinising Hormone
- Oestradiol
- Prolactin
Androgen Hormones
- DHEA Sulphate
- Testosterone
- Sex Hormone Binding Globulin
- Free Androgen Index
- Free Testosterone Calculation
How to prepare
- Fasting required 8–12 h before the test (water only) recommended for glucose, cholesterol/triglyceride accuracy
- Sample timing: between 7:00 AM – 10:00 AM
- Stay hydrated; avoid strenuous exercise, heavy meals, and supplements (iron, B12, multivitamins, biotin) for 48 hours prior
- Continue prescribed medications unless otherwise directed
Frequently asked questions
Who is this test for?
It is for men who have noticed a persistent drop in sex drive. It measures testosterone and SHBG, prolactin, thyroid function and iron status, which together cover the common hormonal reasons libido falls.
When should the sample be taken?
Between 7am and 10am, because testosterone is highest in the morning. Testing later in the day frequently produces an artificially low reading and leads to unnecessary worry or inappropriate treatment.
Can thyroid problems really affect libido?
Yes. Both an underactive and an overactive thyroid reduce sex drive, and thyroid dysfunction is common and very treatable. It is included here because it is often overlooked when the focus goes straight to testosterone.
Do I need to fast?
Fasting is not essential for this panel unless metabolic markers are included for you. Drink water as normal beforehand.
Will low libido always show up in blood results?
No. Stress, depression, poor sleep, relationship factors, alcohol and several common medications reduce libido without altering hormone levels. This panel identifies or excludes the physical causes so that you know where to focus.