Lactate Dehydrogenase


Abbrev Code:LDH   
Order Code:LAB5891Order Name:Lactate Dehydrogenase
Synonyms:LD
Methodology:Roche: UV assay - NAD to NADH
Vista: Bichromatic rate
Woodwinds: Lactate to pyruvate
CPT Codes: 83615 x1, 83615 x1
Turnaround Time:Performed and reported 24 hours/day.
Special Instructions:Vista: Room temperature sample must be analyzed within 24 hours of collection.
Associated Links:

Roche Go Live Schedule



Collection Instructions

Specimen:Blood
Optimal Volume:2.5 mL
Minimum\Peds Volume:0.6 mL
Collection Instructions:Chemistry Tests Containers Chart
Causes for Rejection:Hemolyzed specimens.

Vista: Specimens greater than 24 hours old. Refrigerated specimens.


Processing and Shipping

Specimen Processing:Centrifuge and aliquot 1.25 mL, 0.2 mL minimum. Separate plasma or serum from cells promptly. Centrifuge samples containing precipitate before analyzing.

Roche: Store at refrigerated temperature. 

Vista: Store at room temperature. Analyze within 24 hours of collection. Avoid prolonged refrigeration.
Shipping Instructions:Roche testing sites: Ship at refrigerated temperature.

Vista testing sites: Ship at room temperature.
Stability:Roche: 7 days at room temperature; 4 days refrigerated; 6 weeks frozen. 

Vista: 24 hours at room temperature.
Test Performed at or Referral Lab Chemistry  (Clinics, CSC Maple Grove, Roche-Grand Itasca, Roche-Lakes, Roche-Northland, Roche-Range, Roche-Ridges, Roche-Southdale, Roche-St. John's, Roche-UMMC East, UMMC/UMMCH-West Bank, Woodwinds)


Interpretive

Reference Range:
Woodwinds:
Age Female/Male
0-30 d 135-750 U/L
1 mo - 1 y 180-435 U/L
13 mo - 3 y 160-370 U/L
4-6 y 145-345 U/L
7-9 y 143-290 U/L
10-12 y 120-293 U/L
13-15 y 110-283 U/L
16-17 y 105-233 U/L
18 y & older 125-220 U/L

  All other sites:
Age Vista F
U/L
Vista M
U/L
Roche F
U/L
Roche M
U/L
0 - 14 d 0-1255 0-1255 0-1128 0-1128
15 - 364 d 0-470 0-470 0-424 0-424
1 - 9 y 0-337 0-337 0-305 0-305
10 - 14 y 0-287 0-298 0-260 0-270
15 - 18 y 0-265 0-265 0-240 0-240
19 y & older 81-234 85-227 0-250 0-250
 


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