500 Kshs | Home Collection Available
Calcium Blood Test
Synonyms
None
Purpose
The Calcium Blood Test measures the amount of calcium ions circulating in the blood. Calcium plays a vital role in many bodily functions, including bone health, nerve signaling, muscle contraction, and blood clotting.
Maintaining proper calcium levels is essential for overall health, and imbalances can indicate a variety of medical conditions. This test helps detect calcium-related disorders such as bone diseases, kidney dysfunction, or parathyroid issues.
It is often performed alongside tests for phosphate, magnesium, and parathyroid hormone (PTH) to provide a more complete picture of mineral balance and metabolic health.
Patient Preparation
The patient is expected to fast for hours before the test.
Samples
1ml with a minimum volume of 0.7ml of serum or plasma collected in a Gel-barrier, red-top, or green top tube (lithium heparin). Avoid using EDTA, oxalate, or citrate plasma. Separate the serum or plasma within 45 minutes of sample collection. Store the sample at room temperature.
Reference Range
18-59 years: 8.7-10.2mg/dl, .59 8.6-10.3mg/dl
Results Turnaround
Within 24 hours after sample collection.
Diseases / Diagnostic indicators
If the test shows low calcium levels, it may indicate conditions such as low albumin or low total protein levels, which are often seen in malnutrition, liver disease, or chronic illness. It can also suggest issues with the parathyroid glands or vitamin D deficiency.
On the other hand, high calcium levels may point to problems like hyperparathyroidism or certain cancers (carcinomas), which can cause calcium to be released excessively into the blood.
These results help doctors understand whether the imbalance is due to dietary issues, organ function, or more serious medical conditions.
For more information on Calcium Blood Testing, see this study.