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Erectile dysfunction testing guide
Short answer: A basic erectile-dysfunction work-up commonly includes early-morning total testosterone, fasting glucose or HbA1c, and a lipid profile. Depending on symptoms and the first results, a doctor may add free testosterone, SHBG, LH/FSH, prolactin, thyroid tests or other targeted investigations. Blood tests are only one part of an ED evaluation and should be interpreted with medical history, medications, blood pressure, physical examination and psychological context.
Take the 2-minute ED assessmentGuideline-based starting point
These tests can identify hormonal and metabolic risk signals, but the clinician decides what is appropriate based on your history and recent results.
Checks whether low testosterone could be contributing to low libido, reduced morning erections or other compatible symptoms.
Guidelines recommend a morning measurement. A low result generally requires a repeat morning test before testosterone deficiency is diagnosed.
Looks for current or longer-term blood-sugar patterns that may affect blood vessels and nerves involved in erectile function.
European and American urology guidance includes glucose or HbA1c when recent results are not available.
Provides cardiovascular and vascular-risk context by measuring cholesterol and related lipid markers.
ED and cardiovascular risk factors can overlap, so lipid assessment may be relevant when it has not been checked recently.
Selected when clinically relevant
A longer test list is not automatically better. Additional profiles are most useful when they answer a specific clinical question.
Adds context when total testosterone does not match symptoms or when altered SHBG may affect testosterone available to tissues.
May help distinguish whether confirmed androgen deficiency is more consistent with a testicular or pituitary-hypothalamic pattern.
May be appropriate when testosterone is low, libido is reduced or a clinician suspects a pituitary or medication-related issue.
May be considered when symptoms, examination or medical history suggest thyroid dysfunction.
Can provide broader health context but are not substitutes for history, examination or the core evaluation.
May add metabolic or stress-hormone context, but they are not routine diagnostic tests for every man with ED.
Look at the whole picture
Erectile function depends on coordinated blood flow, nerve signalling, hormones, medication effects and psychological wellbeing. Low testosterone can contribute in some men, but a normal testosterone value does not rule out vascular, metabolic, neurological, medication-related or psychosexual causes.
Important limitation
A blood panel cannot independently diagnose every cause of erectile dysfunction, determine whether symptoms are primarily psychological, assess penile structure or replace a cardiovascular and medication review. Results need to be interpreted alongside symptom duration, morning erections, libido, medical conditions, medicines, lifestyle and relationship context.
The StrideRX approach
StrideRX ErectAware™ is a diagnostic and interpretation service rather than a raw lab test. Essential includes 12 test profiles covering 40+ biomarkers for ₹4,999. Advanced includes 15 profiles for ₹5,999. Both include home collection, a doctor-authored Smart Report on WhatsApp in 24–48 hours, a specialist consultation and a 90-day recovery protocol.
When to act
Consider a clinical evaluation when ED is persistent, recurring, new without a clear explanation, associated with reduced libido or morning erections, or accompanied by diabetes, high blood pressure, obesity or cardiovascular risk factors. Seek urgent medical care for chest pain, severe shortness of breath, sudden neurological symptoms or another medical emergency.
Dr. Varun Arora, MD Psychiatry · Erectile Health Specialist and Specialist Sexologist
Last medically reviewed: 2026-07-17
A common baseline includes early-morning total testosterone, fasting glucose or HbA1c, and a lipid profile. The exact work-up depends on medical history, symptoms and recent test results.
No. Testosterone is one part of the evaluation. Erectile dysfunction can also involve blood-sugar regulation, vascular health, medications, neurological conditions, sleep, alcohol, smoking, anxiety, depression and relationship factors.
Yes. Testosterone varies during the day, and professional guidelines recommend an early-morning measurement. A low result should usually be confirmed with another morning test before testosterone deficiency is diagnosed.
Not every man needs both. Total testosterone is commonly the initial test. Free testosterone and SHBG may add context when total testosterone is borderline, symptoms and results do not match, or altered SHBG is suspected.
Long-term or current high blood sugar can affect the blood vessels and nerves needed for erections. HbA1c and fasting glucose help identify metabolic risk that may be clinically relevant.
Erectile function depends on healthy blood flow, and ED can share risk factors with cardiovascular disease. A lipid profile provides cholesterol and vascular-risk context.
No. They are selected based on symptoms, medical history and initial hormone results.
Yes. Blood tests may be normal when ED is related to medication effects, penile structure, neurological factors, anxiety, depression, relationship issues or vascular problems not captured by a routine panel.
StrideRX provides trained-phlebotomist home collection across 19,000+ serviceable pincodes in India. Pincode availability is checked during checkout.
StrideRX converts laboratory results into a doctor-authored Smart Report, delivered privately on WhatsApp within 24–48 hours. A specialist consultation is included.