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Estradiol (17-β-Estradiol)

Important Note

NOTE: Patients on Fulvestrant (Faslodex) should not use this test for determining Estradiol levels.

 

Additional Codes

Epic# -

LAB523

 

Cerner name(s):

  • Estradiol

 

Performing Lab(s)

Memorial-Belleville only

 

Methodology

Quantitative Chemiluminescent Immunoassay

Specimen Requirement (s)

Specimen Type: plasma (preferred) or serum

Container/Tube:   Mint green LiHep tube (preferred) or SST (gold or marble)

Specimen Volume:     2 mL

Specimen Minimum Volume:  1 mL

 

Collection Instructions: NA

Lab Instructions: Separate from cells ASAP.

Unacceptable Conditions

  • Grossly hemolyzed 
  • Grossly lipemic specimens. 
  • EDTA plasma. 

Day(s)/Shift(s) Test Set Up and Turnaround Time

Sunday through Saturday

Hours: 24 hours

 

Turnaround Time:

STAT: 60 minutes

Routine: less than 24 hours from receipt.

Transport and Stability

Transport temperature: Ambient to lab

 

Analyte Stability: 

Ambient: NA

Refrigerated: 2 days

Frozen: 6 months

CPT/LOINC Codes

82670

Interpretive Data

Interpretive Data

Males: 11 – 43 pg/mL

Females:

Premenopausal: 31 – 533 pg/mL

Postmenopausal: < 50 pg/mL

Patients treated with Fluvestrant (Faslodex) should be tested using an alternate assay such as LC-MS due to potential for cross-reactivity. Estradiol varies widely throughout the menstrual cycle.

Current interpretive data was last revised 10/20/2024.