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Laboratory Medicine

Test catalogue


Test Name

Estradiol (E2)

Gold Tube Specimen Type / Requirements

Container Type = Gold (SST)

Minimum Volume = 1ml Serum

Tube must fill to at least ½ or greater of its vacuum capacity

Specimen Handling

Collection Instructions:

Serum or plasma, free from hemolysis, collected with or without gel separator. Separate serum or plasma from cells within 2 hours of collection

Write your initials, date and time of collection on the collection label.


Stable at room temperature for 8hrs, refrigerated for 2 days and frozen at -20°C for 3 months.


Transport at room temperature ASAP.

Place on ice if time of collection to time sample get to lab exceeds 2hrs

Laboratory Staff Instructions:

Separate serum or plasma from cells within 2 hours of collection. Thaw only once.

Sample Rejection Criteria:

Avoid Hemolysis and/or Non sufficient Quantity (Not Sufficient Quantity)

Required Documentation

Regular HIS order or Biochemistry requisition required

Turnaround Time (TAT)

1 day

Test Utilization


Reference Value

Male: < 165 pmol/L

Early follicular: 110 - 183 pmol/L

Pre-ovulation peak: 550-1650 pmol/L

Luteal: 550 - 845 pmol/L

Post-menopausal: < 200 pmol/L

Test Code



Competitive binding immunoenzymatic

Testing Location


Other Information