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Test & Collection Guide

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Dexamethasone Suppression Test

Laboratory:
Unassigned
Specimen types:
Serum
Container types:
Serum tube with gelSerum tube with gel
Collection Instructions:

The Dexamentasone Suppression Test (DST), also referred to as the "low dose DST" or "overnight DST", is a screening test for Cushing's Syndrome.

  • The requesting clinician should give the patient a 1mg dexamethasone tablet with instructions to take it at 11 pm. (for outpatients: the tablet should only be taken Sunday to Thursday evening, to ensure collection next day.)
  • The patient must present to the collection centre the following morning ( preferably before 10am ) and have a serum sample taken for cortisol analysis.

If there is any doubt do not send the patient away without documented consultation with a senior scientist. ( 9895 3548)

Endocrine consultation is suggested for "High Dose DST".

Reference Interval:
Cortisol <50nmol/L is considered normal and NOT consistent with Cushing's Syndrome.
Laboratory Use Only

  

 

If EMR is not available, Pathology results are available from Auscare.  If you do not have an Auscare login,please complete attached form. https://pathology.easternhealth.org.au/handbook/downloads/Auscare%20access.pdf

Instruction on how to use Auscare - https://pathology.easternhealth.org.au/handbook/downloads/Auscare%20instructions.pdf

SPECIMEN COLLECTION MODULE (SCM) FAQs - CLICK HERE

CLICK HERE for a consent form to perform tests not covered by Medicare

TURN AROUND TIMES - When will my result be available?

CLICK HERE for Minimum Labelling Requirements

CLICK HERE for a printable Pathology request form

CLICK HERE for a Log sheet for recording Pathology results

"THE ART OF CCCCOLLECTION"

PLEASE CLICK HERE FOR THE PREFERRED ORDER OF DRAW