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HelpTest Code TYP Thyroid Screen in Pregnancy
Laboratory Code
LAB3040178
Specimen Requirements
Specimen Type: Serum
Container/Tube: Gold Top (SSTII)
Volume: 5.0 mL
Minimum Volume: 0.5 mL serum
Collection Instructions: Allow specimen to clot for 30 mins and centrifuge within 2 hrs.
Specimen Stability
| Specimen Type | Serum |
|---|---|
| Ambient | 24 hours |
| Refrigerate | 6 days |
| Frozen | 1 month |
Panel Information
Panel includes the following tests:
Methodology
Chemiluminescent Immunoassay
Days and Times Performed
24 hrs, TAT 1 day
Specimen Condition
| Gross Haemolysis | Alert/Reject |
|---|---|
| Icterus | OK |
| Lipaemia | OK |
| Others | Not applicable |
Reference Interval
| Trimester | TSH (mIU/L) | FT4 (pmol/L) |
|---|---|---|
| 1 | 0.16 – 3.78 | 10.9 – 17.7 |
| 2 | 0.34 – 3.51 | 9.3 – 15.2 |
| 3 | 0.34 – 4.32 | 7.9 – 14.1 |
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Diagnosis of thyroid disorders.
Monitoring thyroxine replacement or suppression therapy.
Service Code
31620
LOINC Code Information
Not available
Update
Last updated 13/03/2025