Dr. Lysane Poirier – Endocrinologist | Montréal, QC

Dr. Lysane Poirier, a Endocrinologist (Diabetes & Metabolism Focus), provides expert care for adult patients, and may also see older adolescents for certain endocrine conditions. With conditions related to Diabetes & Metabolism, she practices at Hôpital Santa Cabrini Ospedal in Montréal, QC. As a dedicated member of the local medical community, she adheres to the high standards set by the Collège des médecins du Québec (CMQ). Her practice primarily centers on the comprehensive management of type 1 and type 2 diabetes, metabolic syndrome, and lipid disorders, ensuring a holistic approach to hormonal and metabolic health.

Dr. Poirier holds a Medical Degree from a recognized institution and has over 29 years of experience as an Endocrinologist (Diabetes & Metabolism Focus), having begun her specialization in 1995. She has completed extensive post-graduate training and obtained the necessary certifications to practice endocrinology with a focus on diabetes and metabolic disorders in Québec. Her credentials reflect a deep commitment to maintaining the highest standards of medical excellence and patient safety.

Dedicated to evidence-based hormonal and metabolic care, Dr. Poirier emphasizes patient education, early and accurate diagnosis, and personalized treatment plans aimed at long-term well-being. She is committed to supporting her patients through comprehensive management strategies tailored to their unique needs. Fluent in French, she strives to provide clear, compassionate communication to her diverse patient population in Montréal, fostering a trusting and supportive clinical environment.

Dr. Lysane Poirier diagnoses and treats a wide range of hormonal and metabolic disorders, including:

Diabetes & Related Metabolic Disorders

• Hypoglycemia (Low Blood Sugar - various causes): Abnormally low blood glucose levels, which can occur as a side effect of diabetes treatment (insulin or certain oral medications), or due to other underlying conditions like insulinoma or adrenal insufficiency.
• Type 1 Diabetes Mellitus (T1DM): An autoimmune condition resulting in the destruction of insulin-producing beta cells in the pancreas, requiring lifelong insulin therapy for survival and glucose management.
• Type 2 Diabetes Mellitus (T2DM): A progressive condition characterized by insulin resistance (where the body's cells don't respond effectively to insulin) and/or relative insulin deficiency, often linked to genetics, lifestyle factors, and obesity.

Thyroid & Parathyroid Gland Disorders

• Primary Hyperparathyroidism: A disorder where one or more parathyroid glands become overactive, producing too much parathyroid hormone (PTH), leading to high blood calcium levels (hypercalcemia) and potential bone and kidney problems.
• Thyroid Cancer (Differentiated - Papillary, Follicular; Medullary - follow-up care): Malignant tumors of the thyroid gland. Endocrinologists are involved in post-operative management, hormone suppression, and long-term surveillance.

Pituitary, Adrenal & Gonadal Axis Disorders

• Pituitary Adenomas & Tumors (e.g., Prolactinoma, Non-Functioning Adenoma, GH-secreting/Acromegaly, ACTH-secreting/Cushing's Disease): Mostly benign growths in the pituitary gland that can cause symptoms due to hormone overproduction (e.g., prolactin, growth hormone, ACTH), hormone deficiency (hypopituitarism), or pressure effects on surrounding structures.
• Primary Aldosteronism (Conn's Syndrome): A condition where the adrenal glands produce too much aldosterone, leading to high blood pressure and low potassium levels.
• Hypopituitarism (Panhypopituitarism, Isolated Hormone Deficiencies): Condition where the pituitary gland fails to produce adequate amounts of one or more crucial hormones (e.g., GH, ACTH, TSH, LH/FSH, ADH), requiring hormone replacement therapy.

This list is not exhaustive. For personalized advice regarding your specific endocrine condition, please consult with Dr. Lysane Poirier.

• Interpretation of Complex Hormonal Assays, Dynamic Endocrine Function Tests & Genetic Markers: Expert analysis and clinical correlation of specialized blood, urine, and saliva tests measuring various hormone levels. Includes interpretation of dynamic stimulation and suppression tests (e.g., ACTH stimulation, dexamethasone suppression, oral glucose tolerance test for acromegaly) to precisely evaluate endocrine gland function and identify genetic predispositions.
• Comprehensive Endocrine System Consultation & Hormonal Health Evaluation: In-depth clinical assessment of potential hormonal imbalances and disorders affecting the endocrine glands (e.g., thyroid, pituitary, adrenal, pancreas, parathyroid, gonads). Includes detailed medical history, family history review, targeted physical examination, analysis of symptoms, and formulation of a personalized diagnostic and management plan.
• Transitional Care for Young Adults with Chronic Endocrine Conditions: Facilitating the smooth transition of adolescents and young adults with lifelong endocrine disorders (e.g., Type 1 diabetes, congenital adrenal hyperplasia, hypopituitarism) from pediatric to adult endocrine care services.
• Expert Second Opinion Consultations for Complex or Rare Endocrine Disorders: Providing specialized second opinions on challenging endocrine diagnoses, interpretation of ambiguous hormone test results, or evaluation of complex or multi-faceted treatment plans.
• Genetic Counseling Coordination & Testing for Hereditary Endocrine Neoplasia Syndromes & Familial Disorders: Risk assessment and coordination of genetic testing and counseling for individuals and families with suspected hereditary endocrine tumor syndromes (e.g., Multiple Endocrine Neoplasia - MEN1, MEN2; Von Hippel-Lindau), familial thyroid cancer, or other inherited endocrine conditions.
• Inpatient & Outpatient Management of Endocrine Emergencies & Crises: Acute diagnosis and management of potentially life-threatening hormonal imbalances such as diabetic ketoacidosis (DKA), hyperglycemic hyperosmolar state (HHS), thyroid storm, myxedema coma, adrenal crisis, severe hypoglycemia, and acute hyper/hypocalcemia, typically initiated in an emergency or hospital setting with ongoing outpatient follow-up.

Note: This list provides a general overview. Specific tests and treatments are determined after a thorough evaluation. Discuss with Dr. Poirier for care relevant to your specific condition.

All medical services are provided in accordance with the standards of practice set by the Collège des médecins du Québec (CMQ) and relevant endocrinological care guidelines. Contact the clinic or your referring physician regarding new patient intake and referral processes.

Hôpital Santa Cabrini Ospedal is situated in Montréal's areas near central Montréal, serving as a key medical facility within the hospital. The hospital is conveniently located close to the Marché Bonsecours in Old Montreal and is accessible via Société de transport de Montréal (STM), including Métro and bus services. The facility is fully wheelchair accessible, ensuring ease of access for all patients. Paid parking options are conveniently located nearby, providing easy parking solutions for visitors. This location is a hub for specialized medical care, including endocrine and metabolic services, within a modern and accessible hospital environment.

Are consultations, hormone tests, and treatments with Dr. Poirier, an Endocrinologist (Diabetes & Metabolism Focus), covered by Régie de l'assurance maladie du Québec (RAMQ) in QC?

Medically necessary consultations with a licensed Endocrinologist (Diabetes & Metabolism Focus) like Dr. Poirier, most standard diagnostic hormone blood tests, dynamic endocrine function tests when indicated, and treatments for provincially insured endocrine conditions (e.g., diabetes, thyroid disorders, adrenal insufficiency, osteoporosis management as per guidelines) are generally covered by Régie de l'assurance maladie du Québec (RAMQ) in QC when a referral from a family doctor or another specialist is in place. Some newer or specialized medications (e.g., certain advanced diabetes drugs, some growth hormone therapies, specific osteoporosis agents), medical devices (like some insulin pumps or continuous glucose monitors and their supplies), or treatments considered primarily for lifestyle or cosmetic reasons may have different coverage criteria or require special authorization. It's crucial to discuss coverage specifics for any proposed investigation or treatment with Dr. Poirier's office, the hospital/clinic, or Régie de l'assurance maladie du Québec (RAMQ) directly.

Is a referral required to see Dr. Poirier, an Endocrinologist (Diabetes & Metabolism Focus)?

Yes, for services covered by the provincial health plan, a referral from your family physician or another specialist (e.g., an internist, pediatrician, or gynecologist) is almost always required to schedule an appointment with an Endocrinologist (Diabetes & Metabolism Focus) such as Dr. Poirier. Endocrine system disorders often involve complex interactions and can have wide-ranging effects, so an initial assessment by your primary care provider helps determine if specialist care is needed and ensures that relevant preliminary tests and medical history are available to the endocrinologist. This facilitates a more focused and efficient consultation.

I have a thyroid nodule. What can I expect during an evaluation with an Endocrinologist like Dr. Poirier?

When evaluating a thyroid nodule, an Endocrinologist like Dr. Poirier will conduct a thorough assessment. This typically involves reviewing your medical history (including any symptoms of thyroid dysfunction or family history of thyroid disease), performing a physical examination of your neck and thyroid gland, and ordering blood tests to check your thyroid function (TSH, and possibly free T4, T3, and thyroid antibodies). A thyroid ultrasound is almost always performed to precisely characterize the nodule's size, number, and sonographic features (e.g., solid, cystic, calcifications, irregular margins). Based on these ultrasound characteristics and the nodule's size, Dr. Poirier will determine if a fine-needle aspiration (FNA) biopsy is needed to obtain cells for microscopic examination to rule out thyroid cancer. Most thyroid nodules are benign.

Dr. Poirier mentioned 'dynamic endocrine testing'. What does that mean?

Dynamic endocrine testing involves tests that assess how your endocrine glands respond when stimulated or suppressed by specific substances. Unlike simple blood tests that measure baseline hormone levels, these tests evaluate the gland's functional reserve or its responsiveness to normal control mechanisms. For example, an ACTH stimulation test checks how well your adrenal glands produce cortisol when stimulated. A dexamethasone suppression test helps diagnose Cushing's syndrome by seeing if cortisol production can be suppressed. An oral glucose tolerance test can be used to diagnose diabetes or acromegaly. These tests usually involve taking a baseline blood sample, then administering a medication or substance, followed by one or more timed blood samples to measure hormone changes. Dr. Poirier uses these tests for more precise diagnosis of certain complex endocrine conditions.

Hôpital Santa Cabrini Ospedal
5655 rue Saint-Zotique E
Montréal, QC H1T 1P7

Phone: (514) 252-6000 | Fax: (514) 252-6423

The facility is wheelchair accessible.

Dr. Poirier is a licensed Endocrinologist (Diabetes & Metabolism Focus) regulated by the Collège des médecins du Québec (CMQ) under the Medical Act in QC. A referral from a family physician or appropriate specialist is typically required for consultations with Dr. Poirier for services covered by the provincial health plan.

Verify registration with the Collège des médecins du Québec (CMQ): https://www.cmq.org/en/directory/physicians?number=93294