Calcitriol 1,25-Dihydroxyvitamin D

What this laboratory test evaluates

DetailsCalcitriol 1,25-Dihydroxyvitamin D Test – This test checks the active form of vitamin D in your body. It's mainly used to help figure out why someone has low calcium levels and to keep an eye on people with bone problems due to kidney disease or those with chronic kidney failure. However, it's not the right test for finding out if you're low on vitamin D or for tracking how well vitamin D supplements are working. For those needs, the 25-hydroxyvitamin D test is recommended.

What patients is this test right for?This test is particularly useful for individuals experiencing symptoms of low calcium or those being treated for renal osteodystrophy or chronic renal failure.

What type of sample is required for this test?0.6 mL serum is needed for this test.

Test ResourcesFor more detailed information, it's suggested to refer to the New England Journal of Medicine article from 2007 (Volume 357, pages 266-281).

Additional test information

This test checks the active form of vitamin D in the body. It's mainly used to help figure out why a person has low calcium levels and to keep an eye on people with bone problems due to kidney disease or those with chronic kidney failure.

Collection and processing

• Sample type: Serum
• Fasting: No
• Estimated laboratory processing: Results should be available in 2 – 5 business days after the sample is collected

How Sunridge uses laboratory information

Sunridge considers the medical question, symptoms, history, medications, prior results, and whether the finding could change care before recommending testing. A laboratory result is not interpreted in isolation and does not establish a diagnosis by itself.

Before requesting this test

Availability, collection requirements, eligibility, and processing estimates can change. Sunridge reviews each request and, when appropriate, creates the order through Fullscript. Follow the current instructions supplied with the approved order.