Calcitriol (1,25 di-OH Vitamin D) details
Description
Calcitriol is the active, hormone form of vitamin D — the form that actually does the work of helping your body absorb calcium from food and regulate calcium levels, after your kidneys convert inactive vitamin D (25-OH vitamin D) into this active form. Unlike standard 25-OH vitamin D testing, which reflects your overall vitamin D stores, calcitriol testing is used less often and mainly in specific situations: evaluating certain calcium disorders, kidney disease (since the kidneys are needed to make calcitriol), sarcoidosis or other granulomatous diseases that can produce calcitriol abnormally, and some rare genetic conditions affecting vitamin D metabolism. For routine vitamin D status, standard 25-OH vitamin D testing is the appropriate test, not this one.
Optimal & Reference range
Calcitriol (1,25 di-OH Vitamin D)
pg/mL- Low
- Below optimal
- Optimal
- Above optimal
- High
- Optimal range
- 35 - 55
- Reference range
- 18 - 72
- Out of range
- <18 or >72
Interpretation
- Low: Your result is below the reference range. Discuss it with your healthcare provider, who can interpret it alongside your symptoms and other results.
- Below optimal: Your result is within the reference range, but below the range we consider optimal.
- Optimal: Your result is within the optimal range.
- Above optimal: Your result is within the reference range, but above the range we consider optimal.
- High: Your result is above the reference range. Discuss it with your healthcare provider, who can interpret it alongside your symptoms and other results.
- These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Blood tests with Calcitriol (1,25 di-OH Vitamin D)
Explore available tests to better understand your results and gain deeper insights into your health.
Single marker
Calcitriol (1,25 di-OH Vitamin D)
$67.49
This test measures 1,25-dihydroxyvitamin D (calcitriol), the active form of Vitamin D in the body. It is used to aid in the diagnosis of primary hyperparathyroidism, hypoparathyroidism, pseudohypoparathyroidism, renal osteodystrophy, and vitamin D-resistant rickets.
- Calcitriol (1,25 di-OH Vitamin D) The active, hormone form of vitamin D that directly regulates calcium absorption. Tested less often than 25-OH vitamin D, mainly for kidney or calcium-regulation disorders.
Panel
Calcitriol 1,25-Dihydroxyvitamin D
$35.49
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.
- Calcitriol (1,25 di-OH Vitamin D) The active, hormone form of vitamin D that directly regulates calcium absorption. Tested less often than 25-OH vitamin D, mainly for kidney or calcium-regulation disorders.
- Vitamin D2, 1,25 (OH)2
- Vitamin D3, 1,25 (OH)2
QuestAssureD 25-Hydroxy and Calcitriol 1,25-Dihydroxyvitamin D
$63.49
Vitamin D originating from dietary and endogenous sources is converted to 25-hydroxyvitamin D in the liver, and subsequently to 1, 25-dihydroxyvitamin D in the kidney. Measurement of both the 1, 25-Dihydroxy and 25-Hydroxy forms provide insights into a variety of medical conditions such Vitamin D status in renal failure, differential diagnosis of primary, secondary and tertiary hyperparathyroidism. Differential diagnosis of hypercalcemia and type I and II inherited rickets.
- Vitamin D, 25-OH, Total The combined measure of both major forms of vitamin D (D2 and D3) in your blood — the standard test used to assess overall vitamin D status.
- Calcitriol (1,25 di-OH Vitamin D) The active, hormone form of vitamin D that directly regulates calcium absorption. Tested less often than 25-OH vitamin D, mainly for kidney or calcium-regulation disorders.
- 25-OH Hydroxy Vitamin D (Cholecalciferol D3)
- 25-OH Hydroxy Vitamin D (Ergocalciferol D2)
- Vitamin D2, 1,25 (OH)2
- Vitamin D3, 1,25 (OH)2