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Minerals

Phosphorus

Phosphorus works with calcium to maintain bone strength, which is especially important during pregnancy, breastfeeding, and menopause.

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.

Your reference range
mmol/l
0,73 1,52 mmol/l
Reference ranges by group, in mmol/l
Female · 13–18 years 0,82–1,52 mmol/l
0,82 1,52
Female · 19 years and older 0,73–1,4 mmol/l
0,73 1,4
0,73 1,52 mmol/l

Source: NVKC Reference population: Nederlandse huisartsenpopulatie (NUMBER, n=7.574.327)

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 inorganic phosphate in your blood. It helps evaluate bone health, kidney function, and parathyroid activity.

Why It Matters

Phosphorus is essential for energy storage and transfer (as ATP), bone mineralisation, and DNA synthesis. Imbalances may be associated with bone disorders, kidney disease, or hormonal conditions. Consult your healthcare provider for guidance.

When to Test

Testing may be recommended alongside calcium testing, or if you have kidney disease, bone disorders, parathyroid conditions, or symptoms of mineral imbalance.

Symptoms

Low Levels

Symptoms of low phosphorus may include bone pain, weakness, loss of appetite, numbness, and difficulty breathing. Severe deficiency can affect bone integrity.

High Levels

High phosphorus is often linked to kidney disease and may cause itching, joint pain, muscle cramps, and calcium deposits in soft tissues. Medical evaluation is recommended.

Recommendations

Female

If Low

Low phosphorus may cause muscle weakness. Consider dietary adjustment.

If High

High phosphorus may indicate kidney problems. Consider kidney function testing.

Lifestyle Tips

Phosphorus is widely available in foods such as dairy, meat, fish, nuts, and beans. Most people obtain adequate phosphorus through diet. If you have kidney concerns, your healthcare provider may advise monitoring phosphorus intake.

Frequently Asked Questions

How are phosphorus and calcium related?
Phosphorus and calcium work together to build and maintain bones. Their levels are regulated by parathyroid hormone and vitamin D. An imbalance in one often affects the other.
Can kidney disease affect phosphorus levels?
Yes, the kidneys regulate phosphorus excretion. When kidney function declines, phosphorus may accumulate in the blood. Your healthcare provider can advise on management.
Is phosphorus in processed foods a concern?
Phosphorus additives in processed foods are absorbed more readily than natural phosphorus. Excessive intake from processed foods may be a concern for those with kidney conditions. Consult your healthcare provider.

Tests with related values

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

Phosphorus

€10,-