ESTRIOL, serum (087-0041)
Synonyms: Unconjugated Estriol, E3
CPT 4 Code: 82677
Test Order Mnemonic: Must order AFP-MS1
Lab: Clinical Chemistry
Request Form: Special Chemistry Form 2
Collection: Routine venipuncture
Storage Instructions: Centrifuge the specimen,
remove the serum from red cells and refrigerate serum at 2-8°C for up to 24 hrs. If
>24 hrs, freeze samples at –20°C.
Causes for Rejection: Gross hemolysis or
lipemia
Availability: Samples are received 24 hours per day
in Sample Management, Room 5.136 McCullough.
Turnaround Time: 3 Days. Samples are
routinely run on Monday, Wednesday, and Friday.
Special Instructions: Stat requests can be completed
in 2 hours with laboratory director approval.
Specimen: Blood
Volume: 7 mL
Minimum Volume: 5 mL
Container: red-topped tube or SST
Reference Range: The following ranges are expected
values, not clinically used normal ranges. Weeks of Gestation: Expected Range:
- Weeks 0.10 – 1.0 ng/mL
- Weeks 0.30 – 1.5 ng/mL
- Weeks 0.40 – 2.0 ng/mL
- Weeks 0.60 – 2.6 ng/mL
- Weeks 0.70 – 3.0 ng/mL
- Weeks 1.00 – 3.5 ng/mL
- Weeks 1.50 – 4.0 ng/mL
Reviewed/revised April 2007 by P. Harris
