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Resources

Gestational Age Calculator

Dating Method
MM/DD/YYYY Enter a date. Enter a valid date for dating method. Date cannot be a future date.
Select an option for Was crown-rump length measured.
Weeks
Days
Enter a Gestational Age on Date of Ultrasound. Enter a valid Gestational Age on Date of Ultrasound.
mm
Enter a CRL (Fetus 1). Enter a CRL between 9.5 - 84.5 mm.
mm
Enter a CRL between 9.5 - 84.5 mm.
MM/DD/YYYY Enter a date. Enter a valid date for dating method. Date cannot be a future date.
Weeks
Enter Uterine Size. Enter a valid Uterine Size.
MM/DD/YYYY Enter a date. First Day of Normal LMP must have a valid date format (MM/DD/YYYY). First Day of Normal LMP cannot be a future date.
GA Calculator
Calculating Screening Dates

Gestational Age Today (as of ):

Weeks, Days

Estimated Due Date:

CFDNA Blood Drop

cfDNA Blood Draw Date Range (GA 10 Weeks 0 Days - 21 Weeks 0 Days):

MSAFP Blood Drop

MSAFP Blood Draw Date Range (GA 15 Weeks 0 Days - 21 Weeks 0 Days):

cfDNA Screening Order
Order Instructions

Includes patient, clinician, blood draw instructions.

cfDNA Instructions
Manually Place an Order

Complete a prenatal screening order with paper form if electronic ordering is unavailable.

cfDNA Paper Form
Lab-specific cfDNA Blood Draw Instructions & FAQs
Natera Instructions
Natera FAQs
Quest Diagnostics Instructions
Quest Diagnostics FAQs
Revvity Omics Instructions
Revvity Omics FAQs
MSAFP Screening Order
Order Instructions

Includes patient, clinician, blood draw instructions.

MSAFP Instructions
Manually Place an Order

Complete a prenatal screening order with paper form if electronic ordering is unavailable.

MSAFP Paper Form

Patient Booklet

Includes Patient Consent and Privacy Statement which should be: reviewed, signed, and dated by the patient and then collected for your records.

PNS Orders & Results

How-to Video Playlist

Watch step-by-step guides to PNS Portal, including sign up, log in, placing PNS Orders and viewing PNS Results. See All Videos on the YouTube channel

Out-of-Hospital Birth Report

Search with your entity ID and complete the survey for babies that have been born whom underwent Prenatal screening.

OOH Information
Genetic Counselor Licensure

Apply, update, renew, and pay for your California genetic counseling license.

GCL Information