Marker & why we test
Related symptoms
Coverage
Ferritin
Shows your iron stores. Heavy periods are a common cause of low iron, which can leave you exhausted even before anemia develops.
Fatigue
Hair shedding
Heavy periods
Shortness of breath
Brittle nails
✓ OHIP-covered
✓ MSP-covered
Vitamin D
Supports insulin sensitivity, mood, and immune health. Low levels are common in Canada and in women with PMOS.
Fatigue
Low mood
Muscle aches
Frequent illness
● OHIP-depends
✓ MSP-covered
B12
Needed for energy, nerve health, and red blood cells. Levels can drop with certain diets or medications like metformin.
Fatigue
Brain fog
Low mood
Tingling in hands or feet
✓ OHIP-covered
✓ MSP-covered
Folate
Important for cell growth and red blood cell production, and essential if you are planning a pregnancy.
Fatigue
Mouth sores
Trouble conceiving
Zinc
Plays a role in skin healing, ovulation, and androgen balance. Low zinc is linked to acne and hair thinning.
Hormonal acne
Hair thinning
Slow wound healing
Frequent illness
✓ OHIP-covered
✓ MSP-covered
CBC
A complete blood count checks red cells, white cells, and platelets — screening for anemia, infection, and overall health.
Fatigue
Heavy periods
Easy bruising
Dizziness
✓ OHIP-covered
✓ MSP-covered
C-reactive protein
A general marker of inflammation. Chronic low-grade inflammation is common in PMOS and can affect metabolic health and ovulation.
Joint pain
Fatigue
Inflammation
Anovulation
✓ OHIP-covered
✓ MSP-covered
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