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Lab Test Catalog

Dexamethasone, Serum or Plasma by LC-MS/MS

Ordering Tests

Test Name (Aliases)

Dexamethasone, Serum or Plasma by LC-MS/MS

Test Code

LAB3956

Code Alt

2003248

Tests Included

Dexamethasone, Serum or Plasma

Method

Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)

Performing Lab

ARUP

Days Performed

Reported in 2 – 5 days of receipt

Required Forms

Required Forms

Requirements Preps

Specimen should be collected between 8-10 am (after dose of dexamethasone taken between 11 pm and 12 am the previous evening).
Specimen Collecting and Handling

Specimen Type

Serum, EDTA Plasma or Heparin Plasma

Collection Container

SST Gold tube, Plain Red tube, Lavendar EDTA tube or Green Heparin tube

Required Volume

1 mL

Specimen Handling

1 mL

Name on Report

Name on Report

Clinical Use

Compliance assessment of dexamethasone suppression testing.

Reference Range

Adults baseline: Less than 50 ng/dL
8:00 AM draw following 1 mg dexamethasone between 11:00 pm and 12:00 am the previous evening: 140-295 ng/dL
8:00 AM draw following 8 mg dexamethasone (4 x 2 mg doses) between 11:00 pm and 12:00 am the previous evening: 1600-2850 ng/dL

Critical Values

Critical Values
Charge and Set-up

Coding CPT

80299

Coding Loinic

Coding Loinic

Additional Information

Review our policy provided here to learn more about Riverview Health Laboratory’s services, requirements for orders and specimen submission.

Lab Client Services Guidelines

Lab Collection for Nursing Home and Assisted Living

Modified Sample Collection for Long-Term Care Clients – COVID-19 Plan

The Laboratory evaluates quality and integrity for each specimen submitted for testing in order to ensure accurate results. The policy for evaluation and handling of samples that do not meet quality criteria is viewable here.

Specimen Acceptability and Rejection Policy

Lab Client Portal

Riverview Health Laboratory can now connect with outreach clients to provide electronic order entry and results using the LabWorks Portal. Access to the portal is available for professional clients in the clinic, skilled care, and assisted living location. To request site access for your health care team, please contact the Laboratory at 317.776.7241.
Riverview LabWorks Portal

Lab Client Portal

The following forms may be used to submit requests for laboratory services.

Cytopathology Requisition Form

Surgical Pathology and Medical Cytology Requisition Form

Lead Form – Minors Only

AFP Maternal – Prenatal Quad Form

Patient Collection Instructions

Collection Instructions – Clean Catch Mid Stream Urine

Collection Instructions – 24-Hour Urine

Collection Instructions – Pinworm Prep

Collection Instructions – Semen Fertility

Collection Instructions – Semen Post Vasectomy

For More Information

Riverview Health Laboratory
395 Westfield Road
Noblesville, IN 46060

 

317.776.7241