Plain red top or SST tube.
Minimum volume: 0.3mL serum
Grossly lipemic or hemolyzed specimens, more than three freeze/thaw cycles
Offsite: Send frozen serum Priority Overnight via FedEx and in a well insulated container on dry ice.
<72 hours room temperature
72 hours to 7 days store at refrigerated at 2-8°C
>7 days to 1 year store frozen at -20°C
Two-Step Competitive Binding Immunoenzymatic assay/Chemiluminescent
Results same day if samples are received prior to 6PM
Vit D;Vitamin D;Ergocalciferol;cholecalciferol;Access 25(OH) Vitamin D Total;Rickets
Deficient: Less than 20 ng/mL
Insufficient: 20-29 ng/mL
Sufficient: 30-100 ng/mL
Upper Safety Limit: Greater than 100 ng/mL