
Iodine, Serum/Plasma
Quest Diagnostics
Sample type: Serum
Requires fasting: No
Phlebotomy required
Details
Iodine is crucial for making thyroid hormones. This test checks iodine levels to ensure patients are getting enough from Iodine from diet and to identify iodine overload, which can happen from certain medications like Amiodarone.
- Iodine, Serum/Plasma
Estimated days for results: Results should be available in 2 - 5 business days after the sample is collected
Details
Iodine, Serum/Plasma - Iodine is crucial for making thyroid hormones. This test checks iodine levels to ensure that patients are getting enough from their diet and to identify iodine overload, which can happen from certain medications like Amiodarone.
What patients is this test right for?
This test is important for individuals who might be at risk of either iodine deficiency or excess. Symptoms of iodine deficiency include tiredness, weight gain, and feeling cold, while too much iodine can lead to thyroid gland inflammation.
What type of sample is required for this test?
1 mL serum collected in a no additive trace metal-free (dark blue-top) tube
or
1 mL plasma collected in an EDTA trace metal-free (dark blue-top) tube.
or
1 mL plasma collected in an EDTA trace metal-free (dark blue-top) tube.
3–5 business days
52-109 mcg/L
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 collected in a no additive trace metal-free (dark blue-top) tube or 1 mL plasma collected in an EDTA trace metal-free (dark blue-top) tube
- Alternative: NA
- Minimum Volume: 0.5 mL
- Collection Instructions: NA
Storage and shipping instructions
- Transport Container: Acid-washed or metal-free vial
- Transport Temperature: Room Temperature
- Specimen Stability:
- Room temperature: 10 days
- Refrigerated: 10 days
- Reject Criteria:
- Received frozen • Anticoagulants other than EDTA
State restrictions:
Patient can't order this test if they are located in Hawaii, Puerto Rico, New Jersey, New York, or Rhode Island




