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Epic Code LAB535 Discontinued: Vitamin D 25 Hydroxy Level (25-OH Vitamin D)

Important Note

This test was discontinued on 3/1/2023, recommended replacement test: https://spectrumhealth.testcatalog.org/show/LAB1230925-1

Test Name Alias

Vitamin D 25-Hydroxy Blood Level | VitaminD25Lvl | VitaminD25 Blood Level | Vitamin D | VitaminD | 8330 | Calcifediol

Interface Order Alias

10807

Clinical Information

Vitamin D (25-Hydroxy) is the preferred test for the assessment of Vitamin D absorption and body stores.

Reference Range

  • <10 ng/mL Vitamin D:  Severe Deficiency, risk for osteomalacia or rickets
  • 10 – 19 ng/mL Vitamin D: Moderate to Marginal Deficiency, risk for osteoporosis or secondary hyperparathyroidism
  • 20 – 50 ng/mL Vitamin D: Sufficient level
  • 50 – 80 ng/mL Vitamin D: Possible hypercalciuria, risk with prolonged calcium supplementation
  • >80 ng/mL Vitamin D: Toxicity possible, lowest level with reported toxicity

Population based distributions of total 25-OH Vitamin D levels in the Grand Rapids area, based on studies performed in the winter (February) and summer (August), are 8 to 32 ng/mL and 8 to 48 ng/mL respectively. Vitamin D levels are subject to a significant seasonable variation due to differences in sun exposure.

Performing Department

CHEMISTRY

Performing Department Laboratory Location

Corewell Health Reference Laboratory, Grand Rapids, MI

Methodology

Electrochemiluminescence Immunoassay (ECLIA)

CPT

82306

CDM Code

3018230601

Epic Test ID

1230101291

LOINC

25-OH Vitamin D Total: 62292-8

Mayo Access Code

SHO8330

Reviewed Date

3/23/2022