Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

Test Name: Sunquest Test Code Epic Procedure Code Or ID CPT Code:  

25-HYDROXY VITAMIN D

ORDERING INFORMATION:
Sunquest Test Code:
25OHVD      Geisinger Epic Procedure Code: 82306.03         Geisinger Epic ID: 33530

SPECIMEN COLLECTION
Specimen type:
Serum
Preferred collection container:
Specimen required:
0.5 mL serum; minimum 0.3 mL.

SPECIMEN PROCESSING
Specimen processing instructions:
Allow to clot. Centrifuge serum at 1100-2000g for 10 minutes. Separate from cells immediately. 
Transport temperature:
Refrigerated, 2-8°C.
Specimen stability:
Room temperature: 8 hours. Refrigerated: 4 days. Frozen: 24 weeks.
Rejection criteria:
Grossly hemolyzed, lipemic or samples containing particulate material. Stability limits exceeded.

TEST DETAILS
Interpretation guide:
Deficient <20 ng/mL
Insufficient 20 - 29 ng/mL
Recommended/Optimum 30 - 50 ng/mL
Vitamin D intoxication is rare. If suspicious of Vitamin D toxicity, evaluation of serum calcium and PTH is recommended.
CPT code(s):
82306
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.  The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:
Total vitamin 25-OH D. Vitamin D2, 25-OH, Vitamin D3, 25-OH.
Methodology:
Electrochemiluminescence
Synonyms:
Total Vitamin D; 25-OH Vitamin D, 25-OH D
Clinical significance:
Vitamin D3 and Vitamin D2 are the most abundant forms of vitamin D in the body. Vitamin D3 is synthesized in the skin while D2 is derived from nutritional sources. D3 and D2 are converted to 25OH vitamin D in the liver. 25OH Vitamin D is the best indicator of vitamin D nutritional status.
Doctoral Director(s:)
Hoi-Ying Elsie Yu, PhD, DABCC
Sheng-Ying (Margaret) Lo, PhD, DABCC    
Review Date: 01/29/2019

Performing Locations

Geisinger Medical Center

Performing laboratory: Automated Chemistry
Technical Lead: Mariana Moyer, Jared Shepherd
Frequency: Daily
Performed stat? No
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