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PTD - 271

Test Directory -  Oestradiol

Synonyms

Estradiol, E2

Clinical Indications

Investigation of amenorrhoea. Investigation of gynaecomastia in men. Monitoring of patients with HRT (oestradiol) implants. There is little value in measuring oestradiol for monitoring of oral HRT or patches other than testing for non-compliance or non-absorption.

Oestradiol levels are of no value in investigation of menopause since levels may remain normal for several months following menopause (please refer to protocol on investigation of menopause).

Request Form 

Combined Pathology Blood form (Yellow/Black or Blue for GP's).

Availability

Analysed on request.

Specific Criteria

None.

Patient Preparation

None required.

Turnaround Time

Same day

Specimen

Serum

Volume

1 mL

Container


Yellow top (SST) tube or


Paediatric orange top (lithium-heparin)

Causes for Rejection

Unlabelled sample.

Reference ranges

 

Patient group

Oestradiol (pmol/L)

Boys (1 - 10 years)

Less than 73.4

Girls (1 - 10 years)

22 - 99.1

Men

28 - 156

Women - Follicular phase

46 - 607

Women - Ovulation phase

315 - 1,828

Women - Luteal phase

161 - 774

Women - Post menopause

Less than 201

Pregnancy (1st trimester)

789 - >15,781

Reference: Roche method insert

Lab Handling

 

Processing: Analysed from primary tube and stored at 4C in the cold room (CB23)

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Version 1.0 / June 2014                                                                                                          Approved by: Consultant Biochemist