Immunoglobulin G Subclass 4
Quest Diagnostics
Sample type: Serum
Requires fasting: No
Phlebotomy required
Details
Immunoglobulin G Subclass 4 - This test measures the level of IgG4, a subtype of the IgG antibody, in the blood.
- Immunoglobulin G Subclass 4
Estimated days for results: Results should be available in 2 - 5 business days after the sample is collected
Details
Immunoglobulin G Subclass 4 - This test measures the level of IgG4, a subtype of the IgG antibody, in the blood.
What type of sample is required for this test?
1 mL serum
Test Resources
For more information, please consult your healthcare provider.
2–5 business days
Age Reference Range
0–1 Year 0.5–78 mg/dL
2–3 Years 1–54 mg/dL
4–5 Years 2–112 mg/dL
6–7 Years 0.4–98 mg/dL
8–9 Years 2–95 mg/dL
10–11 Years 2–115 mg/dL
12–13 Years 4–136 mg/dL
14–17 Years 11–157 mg/dL
Adults 4–86 mg/dL
0–1 Year 0.5–78 mg/dL
2–3 Years 1–54 mg/dL
4–5 Years 2–112 mg/dL
6–7 Years 0.4–98 mg/dL
8–9 Years 2–95 mg/dL
10–11 Years 2–115 mg/dL
12–13 Years 4–136 mg/dL
14–17 Years 11–157 mg/dL
Adults 4–86 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
Specimen
- Preferred Specimen(s): 1 mL serum
- Alternative: NA
- Minimum Volume: 0.5 mL
- Collection Instructions: NA
Storage and shipping instructions
- Transport Container: Transport tube
- Transport Temperature: Refrigerated (Cold Packs)
- Specimen Stability:
- Room temperature: 72 hours
- Refrigerated: 10 days
- Frozen: 30 days
- Reject Criteria:
- Gross hemolysis • Lipemia
State restrictions:
Patient can't order this test if they are located in Hawaii, Puerto Rico, New Jersey, New York, or Rhode Island
