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HelpTest Code TT1 1st Trimester Testing
Specimen Requirements
Specimen Type: Serum
Container/Tube: Gold Top (SSTII)
Volume: 5.0mL
Minimum Volume: 0.5mL serum
Collection Instructions: Allow specimen to clot for 30 minutes and centrifuge within 2 hours
Sample Stability
** Preferred temperatures for storage prior to and during shipping to NUH **
| Specimen Type: | Serum |
|---|---|
| Ambient: | 25 hours |
| Refrigerate: | 8 days |
| Frozen: | 12 months |
Days and Times Performed
Monday to Friday, TAT 4 days
Methodology
Electrochemiluminescence
Service Code
31958
Update
Last updated 26/02/2022
Unacceptable Condition
| Haemolysis | Gross reject |
|---|---|
| Icterus | Gross reject |
| Lipaemic | Gross reject |
| Others | NA |
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Prenatal Screening for Down’s Syndrome in 1st Trimester of pregnancy.
Panel Information
Profile includes the following tests:
- Free Beta Human Chorionic Gonadotropin Hormone (FBHCG)
- Pregnancy Associated Placenta Protein-A (PAPP)