Lactate (D), Urine (Sendout)

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General Information

Lab Name
Lab Code
211
External Test Id
DLAU
Description

Useful For: Preferred test for diagnosing D-lactate acidosis, especially in patients with jejunoileal bypass and short-bowel syndrome.

Synonyms
D Lactate, D-Lactate, DLAU, Urine

Interpretation

Method

Gas Chromatography-Mass Spectrometry (GCMS) Stable Isotope Dilution Analysis

Ref. Range Notes
Reference Range: 0-0.25 mmol/L

Interpretation: Increased levels are diagnostic.

Interferences and Limitations

Cautions: The test is for D-lactate, a product of bacterial overgrowth in the gastrointestinal tract. It should not be confused with L-lactate, which accumulates in some metabolic acidosis.

Ordering & Collection

Specimen Type
Urine
Collection

Collect a Random or 24 Hour Urine in a preservative-free container.

Handling Instructions

Outside Laboratories: Aliquot urine to a separate, screw-top vial, allowing room for expansion. Freeze urine at -20°C.

Stability: Frozen (preferred): 90 days; Refrigerated: 90 days; Ambient: 90 days.

Quantity
requested: 2.5 mL urine
minimum: 0.5 mL urine

Processing

Processing
  • Timed Collections: Mix specimen well. Measure and record total volume. Note the collection interval and total volume on the requisition (required).
  • Aliquot urine to a separate plastic screw-capped vial, leaving room for expansion. Freeze urine at -20°.

Login: SEND1-;FREEZE

  • RSNDT1: MAYO
  • RSTYP1: <Select appropriate response below based on specimen type received.>
    • URN-RAND
    • URN-;(INT:##, TV:####)
  • RTSRQ1: ;D Lactate (Mayo Test DLAU)

Sendouts:

  • Order Mayo Test: DLAU.

Stability: Frozen (preferred): 90 days; Refrigerated: 90 days; Ambient: 90 days.

Performance

LIS Dept Code
Performing Location(s)
Sendout Mayo Clinic Laboratories
800-533-1710

200 First Street Southwest
Rochester, MN 55901
Frequency
Monday, ThursdayAnalytic time: 4 days
Available STAT?
No

Billing & Coding

CPT codes
Billing Comments

CPT: 83605

LOINC