| Ordering Recommendation: |
Direct measure of free estradiol in serum. Most accurate measure of bioactive estradiol.
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| Methodology: |
Quantitative Equilibrium Dialysis/High Performance Liquid Chromatography-Tandem Mass Spectrometry
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| Performed: |
Tue, Fri
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| Reported: |
1-6 days
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| Specimen Required: |
Collect: Serum separator tube or green (sodium or lithium heparin), Red Top, Plasma Separator Tube.
Specimen Preparation: Separate from cells ASAP or within 2 hours of collection. Transport 2 mL serum or plasma. (Min: 1.0 mL)
Storage/Transport Temperature: Frozen.
Stability (collection to initiation of testing): After separation from cells: Ambient: unacceptable; Refrigerated: 1 week; Frozen: 6 months
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