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Test Code ESTR Estradiol (E2), Serum


Chemiluminometric Immunoassay

Performing Laboratory

Aspen Valley Hospital

Specimen Requirements

Container/Tube:  Gold-top serum gel tube(s) or lithium green heparin tube

Specimen:  2 mL (minimum volume:  1 mL) of serum

Transport Temperature:  Refrigerate

Collection Instructions:  Allow specimen to clot for approximately 10 minutes and spin down. If drawing gold-top serum gel tube, send entire tube to laboratory.  Specimens are good for 7 days refrigerated.

Reference Values

Males:  11.8-39.8 pg/mL


  Untreated post-menopausal          <11.8 - 32.2

Ovulating females: (by day in cycle relative to LH peak)
  Follicular Phase (-12 to -4 days)   19.5 - 144.2
  Midcycle (-3 to +2 days)                63.9 - 356.7
  Luteal Phase (+4 to +12 days)       55.8 - 214.2

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding