A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #

Vitamin D 25-Hydroxy

Test Code
VITD25


CPT Codes
82306

Preferred Specimen
1.0 ml serum from SST tube


Other Acceptable Specimens
Citrate, Heparin or EDTA plasma


Transport Temperature
Refrigerate


Specimen Stability
Refrigerated: 7 days
Frozen: 4 weeks


Methodology
Competitive Immunoassay

Setup Schedule
Monday - Friday


Reference Range
  • Normal 30-100 ng/ml


Clinical Significance
Vitamin D is synthesized from cholesterol upon skin exposure to UVB sunlight or through dietary intake. It is then hydroxylated in the liver to form 25-OH Vitamin D which is then further hydroxylated in the kidney to form biologically active form, 1,25-(OH)2 Vitamin D. The active hormone is regulated by PTH levels and also CA and P levels. Vitamin D deficiency has been shown to be linked to chronic diseases such as cancer, cardiovascular disease, osteoporosis, osteomalacia and several autoimmune disorders.


Performing Laboratory
Somerset Hospital Lab


Last Updated: January 14, 2020


The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.