Test directory: Estriol, Unconjugated

Ordering Code 265
Test Name Estriol, Unconjugated
Alias E3, Unconjugated
Preferred Specimen Serum
Preferred Container SST (Gold)
Other Specimen/Container Serum in Plain (Red)
Optimum Volume 1.5 mL
Transport Requirements Oahu: Refrigerated
Airline: Refrigerated
Specimen Stability Ambient: 8 Hours
Refrigerated: 2 Weeks
Frozen: 6 Months
Samples may be frozen and thawed twice.
Rejection Criteria Specimen older than stability limits, Grossly hemolyzed,
Insufficient quantity
Avail. Stat NO
Analytic Time Up to 3 Days
Methodology Chemiluminescence

Reference range(s)

The reference ranges listed below are valid on this date of October 31, 2025.
Component Age Male Norm Male Critical Low Male Critical High Female Norm Female Critical High Female Critical Low Units Add'l info
Estriol, Unconjugated ALL ng/mL

  ...
                                          GEST. AGE
                                          26-30 WKS:   2.7-10.8
                                          31-35 WKS:   3.6-18.0
                                          36-37 WKS:   5.4-21.5
                                          38-39 WKS:   7.0-26.3
                                          >39 WKS:     4.0-31.0
See report.
Note1

Note1:


                                          GEST. AGE
                                          26-30 WKS:   2.7-10.8
                                          31-35 WKS:   3.6-18.0
                                          36-37 WKS:   5.4-21.5
                                          38-39 WKS:   7.0-26.3
                                          >39 WKS:     4.0-31.0
See report..