25-Hydroxy vitamin D (D2+D3 fractionated), LC/MS-MS-14231

Test info

  
25-Hydroxy vitamin D (D2+D3 fractionated), LC/MS-MS
  
14231
  
LAB14231
  
VTDLC
  
  • Total 25-hydroxy vitamin D2
  • 25-hydroxy vitamin D3
  

25-Hydroxy vitamin D is used to measure vitamin D status; it includes results for total 25-hydroxy vitamin D2 and 25-hydroxy vitamin D3.

Specimen

  
Serum
  
  
1.0 mL
  
0.5 mL
Submission of the minimum volume does not allow for repeat testing
  

Immediatley following collection, mix sample by gently inverting 5 times

  
  1. Allow sample to clot for a minimum of 30 minutes
  2. Spin within 45 minutes of sample collection
  

Gold serum separator (SST) tube

  
EDTA plasma; Heparin plasma
  

Red serum vial/tube - 5 mL

Lavender (EDTA), 4mL

Dark green heparin

 

 

 

 

  

Red:

  1. Allow sample to clot
  2. Spin within 45 minutes of specimen collection
  3. Transfer the serum to a Transfer vial/tube with cap - 12mL (LabCorp), labelled as serum

Dk green/lavender:

  1. Spin within 45 minutes of specimen collection
  2. Transfer the plasma to a Transfer vial/tube with cap - 12mL (LabCorp), labelled as either EDTA or Heparin plasma
  
  

Ambient (preferred) - 7 days

Refrigerated - 7 days

Frozen - 34 months

Freeze/thaw cycle - stable x6

 

Performance

  
Esoterix Endocrinology (500337) via LabCorp (504115): R-LC
  
Mo - Sa
  
4 - 10 days
  

Liquid chromatography/tandem mass spectrometry (LC/MS-MS)

Clinical and Interpretive info

  

Target levels: 30 - 100 ng/mL

Billing

  
82306
  
Yes
  
  
Result 62292-8

Tracking

  
05/21/2019
  
05/20/2024
  
10/20/2023