Estradiol
| Abbrev Code: | E2 | ||
| Order Code: | LAB523 | Order Name: | Estradiol |
| Synonyms: | Estrogen | ||
| Methodology: | Roche: Competitive test principle using two monoclonal antibodies specifically directed against 17 β-estradiol | ||
| CPT Codes: | 82670 x1, 82670 x1 | ||
| Turnaround Time: | Performed and reported 24 hours/day. | ||
| Special Instructions: | Specimens collected on prepubertal children during an LHRH stimulation test and all males and post-menopausal females should be ordered as E2S Ultrasensative Estradiol. | ||
Collection Instructions
| Specimen: | Blood |
| Optimal Volume: | 2.5 mL |
| Minimum\Peds Volume: | 0.6 mL |
| Container: | Green (lithium heparin, gel) Alternate Containers: Green (lithium heparin, no gel), Red (no gel), Red (gel) |
| Contraindications: | Large doses of biotin (10 mg or more per day) may cause clinically significant interference in estradiol levels. If interference is suspected, it is strongly recommended that biotin is discontinued for at least one week prior to retesting. |
Processing and Shipping
| Specimen Processing: | Centrifuge and aliquot 1.25 mL, 0.2 mL minimum. Store in refrigerator up to 2 days. Alternately freeze. |
| Shipping Instructions: | Ship at refrigerated temperature to arrive within 2 days. Alternatively, ship on dry ice. |
| Stability: | 1 day at room temperature; 2 days refrigerated; 6 months frozen |
| Test Performed at or Referral Lab | Chemistry (Roche-Grand Itasca, Roche-UMMC East) |
Interpretive
| Reference Range: |
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| Use: | For evaluation of ovarian function in women. |
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