TSH, Pregnancy
Quest Diagnostics
Sample type: Serum
Requires fasting: No
Phlebotomy required
Details
This test is crucial for pregnant individuals, particularly for monitoring thyroid health and ensuring the well-being of both the mother and the developing baby.
- Thyroid-Stimulating Hormone
Estimated days for results: Results should be available in 2 - 5 business days after the sample is collected
Details
TSH, Pregnancy - This test measures the levels of Thyroid Stimulating Hormone (TSH) which are typically lower during pregnancy, especially in the first trimester. Recent studies have found that even slightly elevated TSH levels during pregnancy can lead to negative outcomes. Following this, the American Thyroid Association recommends using specific reference intervals for each trimester to ensure accurate assessment.
What patients is this test right for?
This test is crucial for pregnant individuals, particularly for monitoring thyroid health and ensuring the well-being of both the mother and the developing baby.
What type of sample is required for this test?
1 mL serum. A simple blood draw is needed.
3–4 business days
First Trimester 0.26-2.66 mIU/L
Second Trimester 0.55-2.73 mIU/L
Third Trimester 0.43-2.91 mIU/L
Results are flagged based on the first trimester assay-specific reference interval. For later stages of pregnancy, interpret results based on the trimester-specific reference intervals provided.
Second Trimester 0.55-2.73 mIU/L
Third Trimester 0.43-2.91 mIU/L
Results are flagged based on the first trimester assay-specific reference interval. For later stages of pregnancy, interpret results based on the trimester-specific reference intervals provided.
Specimen collection after fluorescein dye angiography should be delayed for at least 3 days. For patients on hemodialysis, specimen collection should be delayed for 2 weeks.
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: 0.7 mL
- Collection Instructions: NA
Storage and shipping instructions
- Transport Container: Serum separator tube (SST)
- Transport Temperature: Room Temperature
- Specimen Stability:
- Room temperature: 7 days
- Refrigerated: 7 days
- Frozen: 28 days
- Reject Criteria:
- Plasma
State restrictions:
Patient can't order this test if they are located in Hawaii, Puerto Rico, New Jersey, New York, or Rhode Island
