Glycols, Ethylene & Propylene

Message

Send STAT to UCH - Denver Colorado see SOP for After Hours STAT send-out instruction
This test should be ordered if volatile screen is requested STAT from the Emergency Department.
Methanol must be ordered separately.

Test Code

PESOT/ #GLYCOLS

Alias/See Also

UCH Code: GLYCOLS - LAB3046
Antifreeze

CPT Codes
82693

Includes

Ethylene Glycol
Propylene Glycol

Preferred Specimen

One 7.0 mL red top no gel, serum (clot activator).

Minimum Volume

1 mL serum

Instructions

Allow to clot for 30 minutes after collection. Centrifuge within one hour of collection. Place at least 1 mL serum/plasma in a tightly sealed aliquot container with minimal dead space and transport to lab at 2-8 degrees C (refrigerated or on ice).
If prolonged storage is anticipated, the addition of fluoride (collect in a grey top tube) is recommended.

See link below for specimen details, methodology, setup schedule and reference ranges.

Specimen Stability

Specimen Type	Temperature	Time
Tightly capped serum aliquot	Ambient	24 hours
	Refrigerated	24 hours
	Frozen	1 month

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

SST or PST gel separator tubes; insufficient volume; sample not properly identified; incorrect container

Methodology
Gas Chromatography (GC)

Setup Schedule

Daily

Report Available

Same day

Reference Range

Ethylene Glycol: <3 mg/dL
Propylene Glycol: <10 mg/dL

Clinical Significance

Ethylene glycol is rapidly oxidized by ADH and should be analyzed immediately whenever ethylene glycol poisoning is suspected.

Performing Laboratory
UCH Clinical Laboratory - Toxicology

Additional Information
UCH Code: GLYCOLS - LAB3046

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.