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HelpTest Code PE-FT Pre-Eclampsia Screening (PAPP-a + PlGF)
Specimen Requirements
Specimen Type: Serum
Container/Tube: Gold Top (SSTII)
Volume: 5.0mL
Minimum Volume: 0.8mL 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: | Reject |
| Refrigerate: | 48 hours |
| Frozen: | 6 months |
Reference Interval
PlGF
| Gestational week | 5th percentile (ng/L) | Median (ng/L) | 95th percentile (ng/L) |
|---|---|---|---|
| 10 to 14 | 28.8 | 52.6 | 122.0 |
| 15 to 19 | 66.2 | 135.0 | 289.0 |
| 20 to 23 | 119.0 | 264.0 | 605.0 |
| 24 to 28 | 169.0 | 465.0 | 1117.0 |
| 29 to 33 | 114.0 | 471.0 | 1297.0 |
| 34 to 36 | 78.0 | 284.0 | 984.0 |
| 37 to delivery | 54.4 | 191.0 | 862.0 |
Days and Times Performed
Monday to Friday, TAT 4 days
Methodology
Electrochemiluminescent immunoassay
Service Code
33320
Unacceptable Condition
| Haemolysis | NA |
|---|---|
| Icterus | NA |
| Lipaemic | NA |
| Others | NA |
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
For patients who opt for Pre-eclampsia screening without combined first trimester screening