Doctor's Assessment Included
Every result includes a professional assessment from a BIG-registered doctor. For treatment decisions, discuss your results with your GP.
PTH (Parathyroid Hormone)
Parathyroid hormone (PTH) regulates calcium and phosphorus, critical for bone strength and muscle function. For athletes and active individuals, balanced PTH levels may support skeletal resilience and recovery.
Reference Ranges
Low
1.6
Normal
6.9
High
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.
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 athletic 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.