Calcitriol 1,25-Dihydroxyvitamin D
Quest Diagnostics
Sample type: Serum
Requires fasting: No
Phlebotomy required
Details
This test checks the active form of vitamin D in the body. It's mainly used to help figure out why a person has low calcium levels and to keep an eye on people with bone problems due to kidney disease or those with chronic kidney failure.
- Vitamin D, 1,25 (OH)2, TOTAL
- Vitamin D2, 1,25 (OH)2
- Vitamin D3, 1,25 (OH)2
Estimated days for results: Results should be available in 2 - 5 business days after the sample is collected
2–5 business days
1-9 Years 31-87 pg/mL
10-13 Years 30-83 pg/mL
14-17 Years 19-83 pg/mL
Adult 18-72 pg/mL
Vitamin D3, 1,25 (OH)2 Not available
Vitamin D2, 1,25 (OH)2 Not available
Reference ranges are established for total 1,25-dihydroxy vitamin D. Values for subcomponents D2 (derived from plant or fungal sources) and D3 (derived from human or animal sources) are provided for informational purposes only.
Blood Draw Options with Fullscript
Fullscript offers several convenient phlebotomy options to complete your lab testing:
Quest Diagnostics Patient Service Centers (PSC)
- Location: Visit a nearby Quest Diagnostics Patient Service Center.
- Cost: $10 sample collection fee (paid during lab order checkout).
- Scheduling: Schedule your appointment here. Appointments are recommended to reduce wait times. Walk-ins are accepted, but may experience delays. Aim to arrive 10 minutes before your appointment.
- Collection Instructions:
- Bring a valid ID.
- Bring your digital or printed requisition form, available in the Labs tab of your Fullscript account.
- Check-in: Scan the QR code from your confirmation email or follow kiosk instructions.
- More Info: Quest Diagnostics blood draw guide
Getlabs Mobile Phlebotomy
- Location: Sample collection at your home or office.
- Cost: $85 sample collection fee (paid during lab order checkout).
- Availability: Available in most locations – enter your ZIP code during checkout to confirm.
- Scheduling: Schedule your appointment here through your Fullscript account.
- Collection Instructions:
- Have your digital or printed requisition form and valid ID ready.
- Your phlebotomist will contact you by phone to coordinate arrival.
- More Info: Getlabs blood draw guide
- Preferred Specimen(s): 0.6 mL serum
- Alternative: NA
- Minimum Volume: 0.25 mL
- Collection Instructions: NA
- Transport Container: Transport tube
- Transport Temperature: Room Temperature
- Specimen Stability:
- Room temperature: 28 days
- Refrigerated: 28 days
- Frozen: 28 days
- Reject Criteria:
- Gross hemolysis • Lipemia • Icteric specimens • Plasma
State restrictions:
Patient can't order this test if they are located in Puerto Rico, Hawaii, Rhode Island, New Jersey, or New York
