Calcium, Ionized
Quest Diagnostics
Sample type: Serum
Requires fasting: No
Phlebotomy required
Details
Calcium, Ionized - Ionized calcium represents the true "bioavailable" calcium in the circulation. In situations where the total calcium is normal but does not fit the clinical picture, e.g. , hyperparathyroidism, a determination of the ionized calcium will, many times, show an elevation in the "bioavailable" calcium component. This may be due to alterations in protein concentrations, especially albumin, that binds most of the calcium in the circulation.
- Calcium, Ionized
Estimated days for results: Results should be available in 2 - 5 business days after the sample is collected
2–3 business days
8–11 Months 5.2–6.1 mg/dL
1 Year 5.1–6.0 mg/dL
2 Years 4.9–5.8 mg/dL
3 Years 4.9–5.7 mg/dL
4–6 Years 4.8–5.7 mg/dL
7–12 Years 4.8–5.6 mg/dL
13–17 Years 4.8–5.5 mg/dL
18–89 Years 4.7–5.5 mg/dL
≥90 Years 4.5–5.5 mg/dL
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): 2 mL serum collected in a gel barrier tube
- Alternative: NA
- Minimum Volume: 0.6 mL
- Collection Instructions: NA
- Transport Container: Unopened gel barrier tube
- Transport Temperature: Room Temperature
- Specimen Stability:
- Room temperature: 7 days
- Refrigerated: 7 days
- Reject Criteria:
- Gross hemolysis • Grossly lipemic • Received frozen • Red-top tube (no gel)
State restrictions:
Patient can't order this test if they are located in Hawaii, Puerto Rico, New Jersey, New York, or Rhode Island
