Estradiol (E2) | KK Women's and Children's Hospital

Specimen Container	Gel separator tube (Adult)
Specimen Requirement	Plain Blood Adult: 5 mL Invert blood 5 times after blood collection ensures the clot-activating factors is well mixed with the blood. This will ensure results are reliable.
Orderable as Urgent?	No
Turn Around Time	3 - 4 hrs
Reference Value(s)	Pre menopausal ≤ 2382 pmol/L Males adults ≤ 161 pmol/L
Testing Laboratory Location	KKH
Laboratory	ImmunoChemistry
Contact Number	6394 1383
Day and Time Performed	Mon - Fri: 0800 hrs to 1700 hrs Sat: 0800 hrs - 1230 hrs
Orderable on CPOE?	Yes
Downtime Form	Clinical Chemistry - Form A

Change History Notes

27 May 2024 08:00 AM

Update of Specimen Requirement.
19 Oct 2021 03:20 PM

Updated Specimen Container, Specimen Requirement, Turn Around Time, Day and Time Performed and Reference Value(s).

Last Updated - 27 May 2025