Antithrombin III Activity
Quest Diagnostics
Sample type: Plasma
Requires fasting: No
Phlebotomy required
Details
Antithrombin III Activity - Aids in the detection of hypercoagulable states associated with venous thrombotic episodes. May be useful in patients who appear to be hyporesponsive to heparin.
- Antithrombin III Activity
Estimated days for results: Results should be available in 2 - 5 business days after the sample is collected
Details
Antithrombin III Activity - Aids in the detection of hypercoagulable states associated with venous thrombotic episodes. May be useful in patients who appear to be hyporesponsive to heparin.
What type of sample is required for this test?
1 mL frozen platelet-poor plasma collected in 3.2% Sodium citrate (light blue-top) tube
Test Resources
For more information, please consult your healthcare provider.
2–5 business days
Age Reference Range
1 day–1 month 41–108 % normal
31 days–2 months 50–120 % normal
3–5 months 73–120 % normal
≥6 months 80–135 % normal
1 day–1 month 41–108 % normal
31 days–2 months 50–120 % normal
3–5 months 73–120 % normal
≥6 months 80–135 % normal
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 frozen platelet-poor plasma collected in 3.2% Sodium citrate (light blue-top) tube
- Alternative: NA
- Minimum Volume: 0.5 mL
- Collection Instructions: NA
Storage and shipping instructions
- Transport Container: Transport tube
- Transport Temperature: Frozen
- Specimen Stability:
- Frozen: 30 days
- Reject Criteria:
- Hemolysis
State restrictions:
Patient can't order this test if they are located in Hawaii, Puerto Rico, New Jersey, New York, or Rhode Island
