Parathyroid Hormone (PTH) Blood Test
Type
Blood Testing
Biomarkers
3
Duration
15 min
Results
48 hours
Measures thyroid hormones to assess metabolic regulation and thyroid gland function.
A thyroid panel evaluates how well your thyroid gland is functioning by measuring the hormones it produces and the pituitary signal that controls it. The thyroid is a butterfly-shaped gland in your neck that regulates metabolism, energy, body temperature, heart rate, and mood. A basic panel measures TSH (the brain's signal to the thyroid) and Free T4 (the main thyroid hormone). Comprehensive panels add Free T3 (the active hormone), reverse T3, and thyroid antibodies (TPOAb, TGAb) that can detect autoimmune conditions like Hashimoto's thyroiditis or Graves' disease. Thyroid dysfunction is extremely common — affecting roughly 1 in 8 women — and often goes undiagnosed because symptoms mimic stress, aging, or depression.
Key Details
Who Is This For?
Anyone experiencing unexplained fatigue, weight changes, hair loss, cold sensitivity, or mood disturbances. People with a family history of thyroid disease or autoimmune conditions. Women planning pregnancy, as thyroid function is critical for fetal brain development. Anyone who has had a 'normal' TSH result but still suspects thyroid dysfunction.
What's Included
Preparation Required
No fasting required for a standalone thyroid panel. If you take thyroid medication (levothyroxine/Synthroid), take your dose after the blood draw, not before — taking it beforehand can temporarily spike T4 levels and skew results. Morning testing is recommended for the most consistent TSH readings, as TSH follows a circadian rhythm and peaks overnight.
More from Bloody Good
The Bloody Good Test
$799Comprehensive health screening covering key biomarkers for metabolic health, hormones, inflammation, and organ function. Available in men's and women's variants.
The Performance Check
$199Performance-focused health panel covering essential biomarkers for energy, recovery, and overall wellness.
Athlete Performance Panel
$485Elite-level biomarker analysis used by professional athletes and Olympic teams. Covers performance, recovery, hormones, and metabolic health markers.
Biological Age Test
$93Measures biological age through key health markers to assess how your body is aging compared to your chronological age.
- Category
- Diagnostic
- Sample Type
- Blood draw
- Duration
- 15 min
- Results
- 48 hours
Bloody Good
On-demand blood testing without a GP visit. Over 200 tests available at 4000+ collection centres across Australia.
