Lysergic Acid Diethylamide (LSD) Screen with Confirmation (Sendout)

Serum/Plasma: Initial presumptive testing by immunoassay at a testing threshold of 0.5 ng/mL; presumptive positives confirmed to limit of quantitation by definitive gas chromatography/mass spectrometry (GC/MS).

Urine: Liquid chromatography/tandem mass spectrometry (LC/MS-MS)

Either sample type may be submitted. Serum/plasma is preferred over urine.

Serum/Plasma: 20 mL blood in RED or GREEN TOP (Heparin) tubes. Wrap specimens in foil to protect from light.

• Gel-barrier tubes are not recommended.

Urine: Collect random urine in a screw-cap urine collection container. Wrap in foil to protect from light.

Outside Laboratories: Submit one or both of the following and indicate the sample type on the DLMP requisition.

• Blood: Centrifuge sample and transfer serum or plasma to a separate amber light-protected vial (samples wrapped in foil are acceptable). Freeze at -20°C.
• Urine: Transfer 10-20 mL random urine to a screw-cap vial and protect from light by wrapping in foil. Refrigerate urine. Freeze at -20°C.

• Blood: Centrifuge sample and transfer serum or plasma to a separate amber light-protected vial, leaving room for expansion. Freeze at -20°C.
• Urine: Transfer 10-20 mL random urine to a screw-cap vial, leaving room for expansion, and protect from light by wrapping in foil. Freeze at -20°C.
• If multiple specimen types are submitted, log a separate order for each.

Login: SEND1-;FREEZE LIGHT PROTECTED

• RSNDT1: MDTX
• RSTYP1: <select appropriate sample type>
  
  • SRM
  • PLS
  • URN
• RTSRQ1: <select test below>
  • ;LSD Screen with Confirmation, Serum/Plasma (MedTox Test 1276)
  • ;LSD Screen with Confirmation, Urine (MedTox Test 1887)

Sendouts:

• Complete a LabCorp MedTox requisition.
• Order the appropriate MedTox test based on sample type received.
  • Serum/Plasma: MDTX Test: 1276.
  • Urine: MDTX Test: 1887.
• Send samples frozen with LabCorp courier (call or schedule pickup online).

Stability: Frozen: Preferred; Refrigerated: 3 days; Ambient: Unacceptable.

Reject Due To: Samples not light-protected, received refrigerated >3 days after collection.

CPTs:

• Serum/plasma: G0434
• Urine: G0431