Lactate Dehydrogenase


Abbrev Code:LDH   
Order Code:LAB5891Order Name:Lactate Dehydrogenase
Synonyms:LD
Methodology:Roche: UV assay - NAD to NADH
Vista: Bichromatic rate
St John/Woodwinds: Lactate to pyruvate
CPT Codes: 83615 x1, 83615 x1
Turnaround Time:Performed and reported 24 hours/day.
Special Instructions:Room temperature sample must be analyzed within 24 hours of collection. UMMC-East Bank Only: Add-ons are acceptable within 4 hours of collection if on the automation line and/or refrigerated. Room temperature specimens are acceptable up to 24 hours.
Associated Links:

Roche Go Live Schedule


Collection Instructions

Specimen:Blood
Optimal Volume:2.5 mL
Minimum\Peds Volume:0.6 mL
Container:Green (lithium heparin, gel), St Johns/Woodwinds - Red (no gel) only -no alternate container
Alternate Containers: Green (lithium heparin, no gel), Red (no gel), Red or gold (gel)
Causes for Rejection:Hemolyzed or refrigerated specimens. Specimens greater than 24 hours old.


Processing and Shipping

Specimen Processing:Centrifuge and aliquot 1.25 mL, 0.2 mL minimum. Store at room temperature. Analyze within 24 hours of collection. Separate plasma or serum from cells promptly. Avoid prolonged refrigeration. Centrifuge samples containing precipitate before analyzing.
Shipping Instructions:Ship at room temperature.
Stability:Vista: 24 hours at room temperature
Roche: 7 days at room temperature; 4 days refrigerated; 6 weeks frozen.
Test Performed at or Referral Lab Chemistry  (Clinics, CSC Maple Grove, CSC Mpls, Grand Itasca, Lakes, Northland, Oxboro Clinic, Range, Roche-Ridges, Roche-UMMC East, Southdale, St. John's, UMMC/UMMCH-West Bank, Woodwinds)


Interpretive

Reference Range:
Grand Itasca (all ages, M/F): 140-271 U/L

St Johns/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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