Posaconazole, serum | KK Women's and Children's Hospital

Specimen Container	Red top (Serum) (To be obtained from DPLM Client Services)
Specimen Requirement	3mL blood Blood sample should be taken just before the next dose for assessment of trough level. Patient Preparation: Patient should abstain from the following at least 3 days prior to and during blood sample collection: where medically possible, drugs such as Mycophenolic acid, Protriptyline, Valsartan. The list of drugs have been selected on the basis of potential significance to test measurement and are not necessarily all-inclusive.
Specimen Storage/Transport	To spin and separate the serum and store at -20 °C before the next transport is available.
Orderable as Urgent?	No
Turn Around Time	2 – 5 days
Reference Value(s)	Therapeutic Range: Suggested trough levels for anti-fungal prophylaxis: > 0.7 mg/L Suggested trough levels for anti-fungal treatment: > 1.0 mg/L
Testing Laboratory Location	SGH
Laboratory	Biochemistry
Contact Number	6394 1532
Day and Time Performed	Mon - Fri: 0800 hrs to 1700 hrs Test setup every Tuesday and Friday
Orderable on CPOE?	Yes
Downtime Form	Clinical Chemistry - Form A
Additional Information	Patient should abstain from the following at least 3 days prior to and during blood sample collection: - where medically possible, drugs such as Mycophenolic acid, Protriptyline, Valsartan. The list of drugs have been selected on the basis of potential significance to test measurement and are not necessarily all-inclusive.

Change History Notes

Last Updated - 06 Oct 2025