Sign in →

Test Code LAB536 1, 25- Dihydroxyvitamin D  

Reporting Title

1, 25-Dihydroxyvitamin D

Methodology

Chemiluminescence by Diasorin Liason XL

Useful for:

As a second-order test in the assessment of vitamin D status, especially in patients with renal disease.

Investigation of some patients with clinical evidence of vitamin D deficiency (eg. vitamin D dependent rickets due to hereditary deficiency of renal 1-alpha hydroxylase or end-organ resistance to 1,25-dihydroxy vitamin D)

Performing Laboratory

OhioHealth Laboratory Services- RMH Special Testing

Specimen Transport Temperature

Ambient/Refrigerated/Frozen YES

Reference Values

19.9-79.3 pg/mL

Specimen Requirement

Submit only 1 of the following specimens:

Preferred:

Serum

Draw blood in a gold-top serum gel tube(s). Spin down and send 1 mL of serum refrigerated.

Note:  

1. A speckled-top serum gel tube (s) or a plain, red-top tube(s) is also acceptable.

2. Indicate serum on request form.
3. Label specimen appropriately (serum).

 

Alternate:

Plasma

Draw blood in a green-top (heparin) tube(s) or a lavender-top (EDTA) tube(s).  Spin down and send 1 mL of heparinized or EDTA plasma refrigerated.

Note:  1. Indicate plasma on request form.
2. Label specimen appropriately (plasma).

 

Specimen Stability Information

Specimen Type Temperature Time
Serum and plasma Refrigerated 14 days
  Ambient  7 days
  Frozen  Stable

 

Day(s) Test Set up

Monday through Friday day and evening shift

Saturday day shift only

Test Classification and CPT Coding

82652