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Corrected Calcium Calculator

Blood calcium levels are easily affected and must be monitered for optimum health. Use the Corrected Calcium Calculator to get correct results. Learn More.

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Home / Health Insurance / Calculators / Articles / Corrected Calcium Calculator

Corrected calcium levels are a vital sign of a patient's health, especially when dealing with disorders that regulate calcium metabolism in the body. Blood calcium levels are easily affected, and the accuracy of their measurement rests on various factors, including albumin levels in the blood. In such circumstances, the corrected calcium levels must be calculated to adjust for the low albumin levels in order to obtain adequate calcium levels. To make the process easier, medical professionals may now use a Corrected Calcium Calculator, which does the calculations automatically and offers accurate results in seconds.

What is a Corrected Calcium Calculator?
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A Corrected Calcium Calculator is a tool that helps determine blood calcium levels in the body. Calcium is an essential element for many body functions, including bone strength, muscular contraction, and nerve activity. 

The Corrected Calcium Calculator is used for calculating various parameters such as albumin, pH, and/or bicarbonate levels that may influence calcium levels in the blood. It takes these aspects into account to calculate a more accurate calcium level in the body. This correction is required because multiple factors could affect the total calcium level in the blood.

The tool is simple to use and requires little input from the physician, making it a quick and dependable means of estimating corrected calcium levels. Furthermore, it avoids the chance of calculating mistakes that may arise while performing the computations manually.

Corrected calcium levels are important for doctors to make sensible decisions regarding patient care, including diagnosis, treatment, and management of decreasing health conditions. As a result, healthcare personnel usually perform a Corrected Calcium Calculation on individuals with abnormal albumin levels. However, manually computing rectified calcium can be time-consuming and error-prone.

What is Calcium?
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Calcium is a compound and is found naturally primarily as calcium carbonate CaCO3 in limestone and other rocks. It is also required by our bodies. It is essential for appropriate bone formation as well as the efficient functioning of blood, muscles, and nerve cells. We have a complete hormone-producing gland called the parathyroid gland that is entirely responsible for maintaining proper blood calcium levels!

A healthy adult's calcium levels should be between 8.8-10.5 mg/dL and 2.25-2.625 mmol/L. If the calcium level is lower than the above level, the condition is referred to as hypocalcemia, whereas hypercalcemia refers to a calcium level that is greater than normal.

What is the Corrected Calcium?
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The majority of the calcium in the body is stored in the bones, with the rest distributed in the blood. When the calcium level in the blood becomes too low, the bones release calcium. On the contrary, when your blood calcium levels are excessively high, the additional calcium is either stored in your bones or excreted in your urine.

However, the calcium found in your serum is not totally pure calcium. About 15% of it forms bonds with organic and inorganic anions, whereas only 45% is biologically ionised calcium. The balance, which is around 40%, is bound to albumin.

Because of this relationship, we might underestimate blood calcium levels in patients with insufficient albumin (hypoalbuminemia). For example, a patient with very low albumin and seemingly normal calcium levels may have hypercalcemia. To avoid such scenarios, you must calculate the Corrected Calcium level.

Corrected Calcium Equation Calculator
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Here is the Corrected Calcium formula correlation depending on albumin level.

Corrected calcium equation in mg/dl:

Corrected Calcium = (0.8 × (Normal Albumin - Albumin)) + Calcium  

In mmol/l:

Corrected Calcium [mmol/L] = (0.02 × (Normal Albumin - Albumin)) + Calcium

Understanding the Calcium Correction
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An adult patient's albumin and calcium levels should fall between the following ranges.

For example, suppose you have low calcium levels (7.4 mg/dL) and extremely low albumin levels (1.5 g/dL). Here, the calcium level indicates hypocalcemia. In this case, would you replace the calcium? Instead, use the Corrected Calcium Calculator to calculate the corrected calcium values. If you are using mg/dl in this example, let us examine how it appears when we enter it into the Corrected Calcium equation.

Calcium corrected [mg/dL] = (0.8 x (4 - 1.5)) + 7.4 = 9.40

In this situation, the Corrected Calcium level is 9.40 mg/dL. In this scenario, low calcium levels are a sign of hypoalbuminemia, which is a medical condition you need to treat.

Normal Calcium Level
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Below is an overview of the normal calcium (in mg) requirements by age.

Age groups

Calcium Supplementation Based on Age

Birth to 6 months

200 mg /daily

Infants (7-12 months)

260 mg/daily

Children (1-3 years)

700 mg/daily

Children (4-8 years)

1000 mg/daily

Children (9–13 years)

1300 mg/daily

Teens (14–18 years)

1300 mg/daily

Adults (19–50 years)

1000 mg/daily

Adult males (51–70 years)

1000 mg/daily

Adult females (51–70 years)

1200 mg/daily

Adults 71 years and older

1200 mg/daily

Pregnant and breastfeeding teens

1300 mg/daily

Pregnant and breastfeeding adults

1000 mg/daily

Why does calcium deficiency occur?
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There are various factors responsible for calcium deficiency. Some may include the following.

Managing calcium levels is essential since calcium is a component of albumin, and the two are proportional to each other. If the level of one falls, the level of the other falls as well. Hypoalbuminemia can result from low albumin levels.

The benefits of calcium
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Calcium benefits may include the following.

Frequently Asked Questions
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Here’s a list of FAQs related to Corrected Calcium Calculator.


How is corrected calcium calculated?

The Corrected calcium is calculated as follows in mg/dl.

Corrected Calcium = serum calcium [mg/dL] + 0.8 x (normal albumin - serum albumin [g/dL])

The default normal albumin level is around 4 g/dL.

What is the normal Corrected Calcium range?

The normal levels range from 8.8 to 10.5 mg/dL and 2.25 to 2.625 mmol/l.

Why is Corrected Calcium calculated?

Serum calcium binds to various proteins, mainly albumin. As a result, in people with low or high serum albumin levels, the total blood calcium concentration may not adequately reflect the biologically essential ionised calcium concentration.

Disclaimer: The content on this page is generic and shared only for informational and explanatory purposes. It is based on industry experience and several secondary sources on the internet, and is subject to changes.