What to Know About Hypocalcemia (Low Calcium Levels)

Hypocalcemia is a condition that occurs when the calcium levels in your blood drops below normal, and it can cause a range of symptoms and health problems.

In this post, we’ll cover what you need to know about hypocalcemia, including its causes, symptoms, diagnosis, and treatment options.

Whether you’re having a challenge with hypocalcemia or just curious to learn more, keep reading to discover what this condition is all about.

What is Hypocalcemia?

Hypocalcemia is when the levels of calcium in your blood becomes too low.

Calcium is an essential mineral that is important for bone health, muscle function, nerve signaling, and blood clotting.

When calcium levels in the blood falls below normal, symptoms can range from mild to severe.

This happens due to a number of reasons, including problems with the parathyroid gland, kidney disease, and vitamin D deficiency.

What are the causes of hypocalcemia?

Hypocalcemia can result from a variety of causes, including:

  • Eating a diet low in calcium
  • Vitamin D deficiency
  • Kidney failure
  • Pancreatitis
  • Hypoparathyroidism
  • Diuretics
  • Anticonvulsants

Other causes of hypocalcemia may include severe burns, massive blood transfusions, or a sudden drop in blood pH.

Symptoms of Hypocalcemia

The symptoms can be different depending on how bad it is and what caused it in the first place.

Some common symptoms include:

  • Fatigue
  • Numbness
  • Spasms
  • Brittle nails
  • Hairloss
  • Slow heartbeat
  • Depression
  • Difficulty swallowing
  • Memory loss
  • Seizures
  • Twitching

Diagnosis of Hypocalcemia

The diagnosis of hypocalcemia involves a physical exam and blood tests to identify the causes of low calcium levels in your blood.

Some of the physical examination findings and blood tests that may indicate hypocalcemia include:

Chvostek’s Sign: This is twitching of the facial muscles that occurs when a doctor taps on a specific spot on the face.

Trousseau’s Sign: This is a spasm in the hand and wrist that occurs when a blood pressure cuff is inflated.

Serum Calcium Test: This blood test is done to check for the amount of calcium levels in your blood.

Ionized Calcium Test: This measures the level of calcium that is free and active in your blood.

Vitamin D Test: Vitamin D helps absorb calcium, so a vitamin D test will help us know if the low levels are contributing to hypocalcemia.

Parathyroid Hormone Test: PTH helps regulate calcium levels in your body, a PTH test will help determine if hypocalcemia is due to a problem with your parathyroid gland.

If your body starts to show any symptoms of hypocalcemia, see a healthcare provider and get tested right away.


In mild cases, treatment may involve increasing calcium intake through calcium supplements.

Vitamin D therapy may also be recommended to improve calcium absorption.

In more severe cases, intravenous calcium, such as calcium gluconate or calcium chloride may be required to rapidly raise calcium levels.

Calcium gluconate is preferred over calcium chloride because it is less irritating to the veins and has a lower risk of causing tissue damage if the injection leaks outside the vein.

In critical cases, calcium chloride may be used, because it contains a higher concentration of calcium ions, which can raise blood calcium levels more quickly.


There are steps you can take to reduce your risk of developing the condition. Here are some tips for preventing hypocalcemia:

  • Consuming a diet rich in calcium and vitamin D
  • Limit alcohol and caffeine
  • Exercise regularly
  • Get regular check-ups


If you don’t treat hypocalcemia, it can cause many problems, such as:

  • Osteoporosis
  • Poor tooth development
  • Seizures
  • Hypertension
  • Heart disease

Conclusion: What to Know About Hypocalcemia

Hypocalcemia is a serious condition that can have consequences if left untreated.

Early diagnosis and treatment are important to prevent complications and ensure optimal health.

By understanding the causes, symptoms, diagnosis, and treatment of hypocalcemia, individuals can take steps to prevent and manage this condition effectively.

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