Modified Sequential Screen

Sunquest Code:MODSS  
Epic Code:LAB4575Epic Name:Modified Sequential Screen
Synonyms:Ultra-Screen Two
CPT Code:82105, 82677, 84704, 86336
Turnaround Time:Specimens are sent to reference laboratory Mon-Fri; results are reported within 6-8 days.
Special Instructions:NTD Laboratory's requisition for Modified Sequential Screening is required. The requisition must be completely filled out by the clinic. This includes items numbered 1-16 (except for number 5-billing), physician name, physician code as well as patient signature and date. Specimen is to be collected using the NTD collection box. This box contains 3 plastic screw top tubes with a 7.5 mL gel vacutainer in each. You will only need to collect one of the gel vacutainer tubes.

Collection Instructions

Optimal Volume:7.5 mL

Processing and Shipping

Specimen Processing:Centrifuge and place in screw top contained provided in kit.
Shipping Instructions:Ship at room temperature for overnight delivery.
Test Performed at or Referral Lab Lab Sendouts  (NTD Laboratories, Inc.)


Reference Range:Positive or Negative
Use:The Modified Sequential Screen may be used in conjunction with the results of a First Trimester Screen to further define a woman's risk of having a fetus with chromosomal abnormalities of Down syndrome, Trisomy18, and Trisomy13. It is generally performed at 16 weeks. It may be requested by the patient's physician or a genetic counselor. It must be performed by the same site where the First Trimester Screen was performed.

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