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Hormones

PTH (Parathyroid Hormone)

Parathyroid hormone (PTH) regulates calcium and phosphorus, critical for bone strength and muscle function. For active individuals and active individuals, balanced PTH levels may support skeletal resilience and recovery.

Doctor's Assessment Included

Reference Ranges

See the value that applies to you:

Choose male or female — this range differs by sex.

Enter your age — this range changes with age.

This range also depends on context such as cycle phase or sample material; the highlighted rows apply to your group.

Male Your group
pmol/l
Low 1.6 Normal 6.9 High
Female Your group
pmol/l
Low 1.6 Normal 6.9 High

Reference ranges may vary between laboratories. When you order a test, a BIG-registered doctor assesses your personal results in context. For treatment decisions, discuss your results with your GP.

Check your own value

What It Measures

This test measures the level of parathyroid hormone in your blood, reported in pmol/l. PTH helps regulate calcium balance by signaling bones, kidneys, and intestines to adjust calcium and phosphorus absorption and release.

Why It Matters

Active individuals may place greater demands on their skeletal system. Monitoring PTH levels could help identify potential calcium imbalances that might affect bone strength, recovery, and overall physical performance over time.

When to Test

Testing may be considered when experiencing unexplained bone pain, frequent fractures, or abnormal calcium levels. Some healthcare providers may also recommend testing if kidney stones occur repeatedly or if vitamin D deficiency is suspected.

Symptoms

Low Levels

Some people with low PTH levels may experience muscle cramps, tingling in the fingers or around the mouth, fatigue, or dry skin. Low PTH could potentially lead to elevated phosphorus and reduced calcium levels over time.

High Levels

Some people with elevated PTH levels may experience bone pain, fatigue, excessive thirst, frequent urination, or kidney stones. High PTH could potentially be associated with weakened bones and elevated blood calcium levels.

Lifestyle Tips

Maintaining adequate vitamin D and calcium intake through diet or supplementation may support healthy PTH levels. Regular weight-bearing exercise could benefit bone health. Consult your healthcare provider before making significant dietary changes.

Frequently Asked Questions

What is a normal PTH level?
Normal PTH levels generally fall between 1.6 and 6.9 pmol/l, though reference ranges may vary between laboratories. Your healthcare provider can help determine what is normal for your individual situation.
Can vitamin D affect PTH levels?
Vitamin D deficiency may cause PTH levels to rise as the body attempts to maintain calcium balance. Ensuring adequate vitamin D intake could help support healthy PTH regulation. Discuss supplementation with your healthcare provider.
Should I fast before a PTH test?
Fasting is generally not required for a PTH test, though your healthcare provider may give specific instructions. PTH levels can fluctuate throughout the day, so morning testing is sometimes recommended for consistency.

Tests with related values

These panels measure values from the same category as this marker.

Whoop

A 44-biomarker comprehensive health panel inspired by WHOOP Advanced Labs — a deep look at metabolism, cardiovascular risk, hormones, liver, kidney and inflammation.

SHBG (Sex Hormone Binding Globulin) TSH (Thyroid Stimulating Hormone) ALT (Alanine Aminotransferase) LDL Cholesterol Cortisol DHEA-S Estradiol (E2) Free Testosterone FSH (Follicle Stimulating Hormone) LH (Luteinizing Hormone) Total Testosterone Bicarbonate Calcium Chloride Ferritin Iron (Serum) Magnesium Potassium Sodium Transferrin CRP (C-Reactive Protein) Homocysteine Glucose (Fasting) HbA1c (Glycated Hemoglobin) ApoB (Apolipoprotein B) HDL Cholesterol Omega-3 Index Total Cholesterol Albumin HOMA-IR ALP (Alkaline Phosphatase) AST (Aspartate Aminotransferase) Bilirubin (Total) Total Protein Urea (BUN) Creatinine Vitamin D (25-OH) eGFR (Estimated Glomerular Filtration Rate) Insulin (Fasting) Leukocyte Differential Transferrin Saturation Lipoprotein(a) Triglycerides Basic Blood Count
€499,-
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InsideTracker

A 36-biomarker performance and longevity panel inspired by InsideTracker Ultimate — covering heart, hormones, metabolism, inflammation, recovery and iron status.

SHBG (Sex Hormone Binding Globulin) TSH (Thyroid Stimulating Hormone) ALT (Alanine Aminotransferase) LDL Cholesterol GGT (Gamma-Glutamyl Transferase) Cortisol DHEA-S Estradiol (E2) Free Testosterone Total Testosterone Folate (Folic Acid) Vitamin B12 Calcium Ferritin Iron (Serum) Magnesium Magnesium (Intracellular) Potassium Progesterone Sodium Transferrin CRP (C-Reactive Protein) Glucose (Fasting) HbA1c (Glycated Hemoglobin) ApoB (Apolipoprotein B) HDL Cholesterol Total Cholesterol Albumin AST (Aspartate Aminotransferase) Vitamin D (25-OH) Insulin (Fasting) Leukocyte Differential Creatine Kinase (CK) Transferrin Saturation Triglycerides Basic Blood Count
€399,-

PTH (Parathyroid Hormone)

€59,-