
Diphtheria Antitoxoid
Quest Diagnostics
Sample type: Serum
Requires fasting: No
Phlebotomy required
Details
Diphtheria Antitoxoid - Used to evaluate diphtheria immunization response. Antibody levels of ≥0.10 IU/mL are considered protective.
- Diphtheria Antitoxoid
Estimated days for results: Results should be available within 2 - 5 business days after samples are received at the lab.
Diphtheria Antitoxoid - Used to evaluate diphtheria immunization response. Antibody levels of ≥0.10 IU/mL are considered protective.
2–5 business days
Interpretive Criteria
<0.10 Nonprotective Antibody Level
≥0.10 Protective Antibody Level
Antibody levels ≥0.10 are considered protective. After a primary series of three properly spaced diphtheria toxoid doses in adults or four doses in infants, a protective level of antitoxin (defined as ≥0.10 IU of antitoxin/mL) is reached in more than 95% of immunized persons.
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): 1 mL serum
- Alternative: NA
- Minimum Volume: 0.3 mL
- Collection Instructions: NA
- Transport Container: Transport tube
- Transport Temperature: Room Temperature
- Specimen Stability:
- Room temperature: 7 days
- Refrigerated: 14 days
- Frozen: 30 days
- Reject Criteria:
- Gross hemolysis • Grossly lipemic • Grossly icteric
State restrictions:
Patient can't order this test if they are located in Puerto Rico, Hawaii, Rhode Island, New Jersey, or New York

