|Values are valid only on day of printing.|
Sequential maternal screening is a 2-part test that includes a first-trimester sample (SEQU / Sequential Maternal Screening, Part 1, Serum) and a second-trimester sample (SEQF / Sequential Maternal Screening, Part 2, Serum). Do not order this test unless you have already ordered test SEQU / Sequential Maternal Screening, Part 1, Serum. If a standalone second-trimester screen is desired, order QUAD / Quad Screen (Second Trimester) Maternal, Serum.
Draw blood between 15 weeks, 0 days and 22 weeks, 6 days. Do not draw blood after performing amniocentesis, as that may lead to an artificially increased serum alpha-fetoprotein level and unreliable results.
Preferred: Red top
Acceptable: Serum gel
Specimen Volume: 1 mL
Collection Instructions: Spin down immediately.
Additional Information: Draw date is required.
Mild OK; Gross reject
Mild OK; Gross OK
|Serum||Refrigerated (preferred)||7 days|