Description: This test is used to measure the bio-active form of Vitamin D. This test is also used in the differential diagnosis of hypocalcemia and to monitor patients with renal osteodystrophy or chronic renal failure.
A significant deviation from the normal range may require further evaluation by your physician.
Description: This test is not the same as vitamin D3 (25-hydroxy vitamin D3). Vitamin D3 must be ordered separately. Aid in the diagnosis of primary hyperparathyroidism, hypoparathyroidism, pseudohypoparathyroidism, renal osteodystrophy, vitamin D resistant rickets
Includes: Vitamin D, 1,25 Dihydroxy This test is also known by the following 1,25(OH) Vitamin D 1,25-Dihydroxy Vitamin D 1,25-Dihydroxycholecalciferol Calcitriol (1,25 di-OH Vitamin D)
Patient Instructions: No isotopes administered 24 hours prior to venipuncture. Vitamin D, 1,25 Dihydroxy is not the same as vitamin D3 (25-hydroxy vitamin D3). Vitamin D3 25-hydroxy must be ordered separately.
Estimated turnaround for results is 5 business days. If confirmation testing is required, the estimated time may be extended.