Simira Diagnostics
Biochemistry

Ionised Calcium

  • Report in 4 hrs
  • Serum sample

Price

₹1,150

  • Report in 4 hrs
  • Free home sample collection
  • ₹200 off at checkout
  • NABL certified lab

or call 77900 98009

Ionised Calcium

₹1,150

About this test

The ionized calcium test measures the free, biologically active calcium in the blood, which makes up about 50% of total calcium. It controls muscle, nerve, and heart function.

Normal ionized calcium levels are about 4.6–5.3 mg/dL (1.15–1.33 mmol/L), varying by lab.

Unlike total calcium, it is not affected by albumin levels, making it more accurate in critical illness, low albumin, kidney disease, major surgery, and blood transfusions.

High levels suggest hyperparathyroidism or cancer. Low levels may cause muscle spasms, tingling, seizures, and irregular heartbeat.

Questions about this test

When should I get the Ionised Calcium test?

You should get an ionized calcium test if your total calcium is abnormal but your albumin is low, or if you have muscle spasms, tingling, or irregular heartbeat. It is also recommended during critical illness, major surgery, or multiple blood transfusions, and for people with kidney disease or parathyroid disorders.

How should I prepare for the Ionised Calcium test?

Fasting for 6–8 hours is often recommended before an ionized calcium test, and you may drink water during this time. Stay relaxed and avoid clenching your fist during sample collection, as it can affect results. Avoid calcium supplements and antacids beforehand, and inform your doctor about any medicines you take.

Do I require fasting for the Ionised Calcium test?

Fasting is often recommended for an ionized calcium test. You may be asked to fast for 6–8 hours, drinking only water. Avoid calcium supplements and antacids before the test, and stay relaxed during sample collection, as fist clenching can affect results. Follow your lab's specific instructions.

More Biochemistry tests

See all 343

Not sure this is the right test?

Tell us what your doctor has prescribed and our team will confirm the right test and book it for you.

77900 98009