Weight Loss Injections & Fertility
What to Test Before and During Mounjaro (GLP-1 Treatment)
Using Mounjaro or planning weight loss injections?
Whether you receive Mounjaro through Marylebone Diagnostic Centre or via your GP, one thing matters most: Your safety, hormones, and fertility must be monitored.
Weight loss injections work. However, they also affect reproductive hormones, liver function, kidney health, and nutritional balance. This page explains what to test, when to test, and how MDC supports you safely.
Why Fertility & Hormone Testing Matters on GLP-1 Injections
GLP-1 medications influence more than appetite. They can affect:
- Testosterone and oestrogen levels
- Ovulation and menstrual cycles
- Sperm health and hormone balance
- Thyroid and metabolic hormones
Rapid weight loss alone can also suppress fertility signals. Many changes are silent at first. Blood testing detects problems early.
What We Recommend Testing
1. Fertility & Reproductive Hormones
For men: Testosterone, Free Testosterone, SHBG, LH & FSH, Prolactin.
For women: Oestradiol, Progesterone, LH & FSH, AMH (if fertility planning), Prolactin.
2. Liver Function
GLP-1 medications and rapid fat loss increase liver workload. We assess: ALT, AST, ALP, Bilirubin. This helps identify liver stress early.
3. Kidney Function & Hydration
Reduced appetite and thirst increase dehydration risk. We test: Creatinine, eGFR, Urea, Electrolytes. Kidney monitoring is essential for safe continuation.
4. Metabolic & Nutritional Markers
Weight loss injections may reduce nutrient intake. We often include: Vitamin B12, Vitamin D, Iron status, Folate, HbA1c.These protect energy, mood, and fertility.
Two Safe Ways to Use Mounjaro with MDC
When Should You Test?
We recommend: Mounjaro Profile
Perform the baseline profile above.
Follow-up after starting treatment.
Final tests to see how you are progressing.
This applies whether treatment is NHS or private.
⚠️ Who Should Be Especially Careful?
- Men planning future fertility
- Women considering pregnancy
- Patients with irregular cycles
- Anyone with fatigue or libido changes
- Those with previous liver or kidney issues
If fertility matters to you, testing matters.
Why choose Marylebone Diagnostic Centre?
Results within 24 - 42 hours
Rapid turnaround time for all weight loss and fertility markers.
On-site Review
Direct clinical oversight ensuring your safety during treatment.
Private Talks
Confidential consultations tailored to your health journey.
Discreet & Confidential Care
Private suites ensuring your care is kept strictly professional.
Central London Location
Heart of Marylebone, easily accessible via Baker Street tube.
Our Philosophy: "We focus on long-term health, not short-term weight loss."
