Phosphorus normal range — check your value

Roughly 2.5 to 4.5 mg/dL in adults. Children run higher.

Read my result

Which test?

Type the test name printed on your report (SGPT, TSH, Vitamin D).

Popular:

About you

Name

Mobile Number

+91

Age in years

years

Gender

Your Phosphorus test value

Copy it exactly as printed in your report

Phosphorus

mg/dL

What Phosphorus measures

A mineral that pairs with calcium to build bone and carries energy inside every cell. Cleared by the kidneys.

Phosphorus normal range chart

ResultPhosphorus (mg/dL)

Below rangeBelow 2.3

In range2.3 – 4.7

Above range4.7 and above

These bands are for female, 31–45 years. Enter your age and gender above to see the bands for you. The table below shows the range for every age and gender.

Phosphorus normal range by age and gender

AgeMaleFemale

0–1 years4.2 – 7.6 mg/dL4.2 – 7.6 mg/dL

2–6 years2.3 – 4.7 mg/dL2.3 – 4.7 mg/dL

7–11 years2.3 – 4.7 mg/dL2.3 – 4.7 mg/dL

12–17 years2.3 – 4.7 mg/dL2.3 – 4.7 mg/dL

18–30 years2.3 – 4.7 mg/dL2.3 – 4.7 mg/dL

31–45 years2.3 – 4.7 mg/dL2.3 – 4.7 mg/dL

46–60 years2.3 – 4.7 mg/dL2.3 – 4.7 mg/dL

60 years and above2.3 – 4.7 mg/dL2.3 – 4.7 mg/dL

What a high Phosphorus means, and common causes

Phosphorus is above range, most often because the kidneys are no longer clearing it. Over time this damages bones and blood vessels.

Common causes: Chronic kidney disease, underactive parathyroid glands, excessive vitamin D, and a haemolysed sample.

What a low Phosphorus means, and common causes

Phosphorus is below range, which when severe causes muscle weakness and bone pain.

Common causes: Vitamin D deficiency, overactive parathyroid glands, malnutrition and refeeding after starvation, alcohol use, and antacids that bind phosphate.

Frequently asked questions

Roughly 2.5 to 4.5 mg/dL in adults. Children run higher.

Failing kidneys retain phosphorus, which pulls calcium from bone and calcifies blood vessels. Controlling it is a core part of kidney care.

Kidney ki jaanch karwayein. Khaane mein processed food aur cold drinks kam karne ki salah di jaati hai.

Please note. This page explains what a number means against reference ranges for your age and gender. It does not diagnose anything, cannot see the rest of your report, and is no substitute for a doctor. If your lab’s printed range differs, your lab’s range applies.