- Test Name
- Maternal Serum Screen
- Aliases
- MSS; Quad Screen; Inhibin; HCG; estriol; AFP
- Provincial Mnemonic
- QUAMS
- LOINC Test Code
- 49092-0
- Description and Primary Use
- Second trimester screen to determine if fetus is at risk of having OSB, Down syndrome or Trisomy 18.
- Reorder interval
- Not yet defined
- TAT
- 7 Days
- Test Cost
- Not Available
- Tier
- 1 - General Availability
- Ordering Requirements (Restrictions / Conditions)
Patient should be between 15-20 weeks GA. Maternal serum screen requisition is required and must be completed with all information.
- Required Consultations
- Algorithms and Guidelines
None
- Special Patient Preparation
None
- Special Collection / Transport / Processing Requirements
Collect in SST and sepereate from cells within 2 hours. Sample must be frozen within 48 hours.
- Criteria for Rejection
Repeated freezing and thawing of samples are not reccomended.
- Laboratory Service Area
- Clinical Chemistry
- Performing Laboratory / Site
- Category 4 Laboratory (HSC only)
- Last Updated
- 04-Sep-19