Measured Serum Calcium (mg/dL) Enter your total blood calcium level from your lab report

Serum Albumin (g/dL) Enter the albumin level from your lab report

Quick Examples:

Low Albumin (2.0 g/dL) Normal Albumin (4.0 g/dL)

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This calculator is a screening tool only, not a diagnostic instrument. It is not intended to replace professional medical evaluation. Consult a healthcare provider.

What Is Corrected Serum Calcium

Corrected serum calcium is a math fix for your calcium blood test. Calcium in the blood sticks to a protein called albumin. If you have low albumin levels, your total calcium test might look low even if your calcium level is actually normal. This calculator adjusts the number to show what your calcium likely is if your albumin were at a normal level.

How Corrected Serum Calcium Is Calculated

Formula

First, we find the difference between a normal albumin level (4.0) and your actual level. Then, we multiply that difference by 0.8. This number is added to your measured calcium. This fixes the score because low albumin makes calcium look lower than it really is.

Why Corrected Serum Calcium Matters

Knowing this number is very important. It helps doctors see if you have enough calcium in your body. If the raw number is wrong, you might get treated for a problem you do not have.

Why Checking Albumin Is Important for Bone Health

If albumin is low, standard calcium tests can be misleading. You might think your calcium is low when it is actually fine. Using the corrected number helps avoid unnecessary treatments and ensures you get the right care for your bones.