Checks for vitamin D deficiency — one of the most common worldwide. Low levels link to fatigue, depression, weak bones, and poor immunity.
✓ Recommended for: everyone, especially those indoors a lot
→ If low: consider Vitamin D3 + K2
Deficiency causes fatigue, brain fog, nerve damage, and mood changes. Very common in vegetarians, vegans, and adults over 50.
✓ Recommended for: vegans, vegetarians, adults 50+
→ If low: methylcobalamin B12 supplement
Ferritin (stored iron) is a better indicator than serum iron alone. Low ferritin causes hair loss and exhaustion even when regular iron looks normal.
✓ Recommended for: women 18–50, anyone with unexplained fatigue
→ If low: iron bisglycinate (gentler form)
Standard serum magnesium misses most deficiencies. The RBC (red blood cell) test is far more accurate. Low magnesium is extremely common.
✓ Recommended for: anyone with poor sleep, muscle cramps, or stress
→ If low: magnesium glycinate or malate
Measures EPA and DHA levels in red blood cells. Most people in Western countries score below the optimal range of 8%. Linked to heart and brain health.
✓ Recommended for: adults not eating fatty fish 2+ times/week
→ If low: high-quality fish oil or algae omega-3
Thyroid dysfunction affects energy, weight, hair loss, and mood. Often goes undetected for years. A full panel catches subclinical issues a basic TSH might miss.
✓ Recommended for: women 30+, anyone with unexplained fatigue or weight changes
→ Supplement zinc, selenium, iodine if deficient
A 3-month average of blood sugar. Detects pre-diabetes early — a condition affecting 1 in 3 adults who don't know they have it. Fasting not required.
✓ Recommended for: adults 35+, anyone overweight or with family history
→ Consider: berberine, magnesium, chromium
Measures LDL, HDL, triglycerides, and total cholesterol. Triglycerides respond strongly to diet and can be improved with omega-3s.
✓ Recommended for: adults 30+, especially with family history of heart disease
→ If triglycerides high: omega-3, berberine, CoQ10
Zinc and copper must stay in balance. Excess zinc supplementation depletes copper, and vice versa. Good baseline before starting either.
✓ Recommended for: anyone considering zinc or copper supplements
→ Supplement based on result only
Morning cortisol reveals adrenal function and stress hormone patterns. Chronic stress often shows up here before symptoms become obvious.
✓ Recommended for: high-stress adults, those with burnout or fatigue
→ Adaptogenic herbs: ashwagandha, rhodiola, holy basil