UCSF Navigation Bar

UCSF Departments of Pathology & Laboratory Medicine Home Page

Lab Manual for Moffitt-Long and Mount Zion

Lab Manual for SFGH

Internal Resources

Click here for more information about laboratory operations and procedures

Lactate Dehydrogenase, Serum / Plasma

Item Value
Approval req'd? No
Available Stat? No
Test code LD
Test group LD
Performed by Parnassus & Mt. Zion Chemistry
In House Availability Test available 24 hours per day 7 days per week
Method Spectrophotometric, kinetic (lactate/NADH)
Collection Instructions Samples should be submitted to the laboratory for processing within 2 hours of collection
Container type Gold top or Light Green top
Amount to Collect 1 mL blood Click here for Microdetermination info
Sample type Serum or plasma
Preferred volume 0.5 mL serum or plasma
Min. Volume 0.2 mL serum or plasma Click here for Microdetermination info
Processing notes Centrifuge and separate serum/plasma from cells. Do not freeze.
Units U/L
Normal range
Age Male & Female Male Female
< 1 month 125-735 U/L --- ---
1 month - 11 months 170-450 U/L --- ---
1 year - 4 years -- 140-304 U/L 142-297 U/L
5 years - 9 years -- 155-290 U/L 142-261 U/L
10 years - 14 years -- 115-257 U/L 122-234 U/L
≥ 15 years 102-199 U/L


1. Pediatric reference ranges for children <1 year adapted from Soldin, Steven J. Pediatric Reference Intervals (method 3), 6th edition, AACC Press, 2007.
2. Normal range for children 1 to less than 15 years old adapted from Beckman Coulter's "Pediatric Reference Range Guidelines for Synchron Systems" Bulletin 9345
3. Normal range for adults was determined by testing 271 male and female healthy blood donors at UCSF. Adult range used for pediatric patients >15 years.
Synonyms LD; LDH
Stability Serum stable 2 days at 2-8°C. Do not freeze. Certain LDH isoenzymes (LD-4 and LD-5) are more sensitive to cold. Specimens may have variable decreases in LD activity when stored at 2-8°C, depending on their isoenzyme composition.
Turn around times 4 hours
Additional information Hemolysis may increase the LDH result.

Certain LDH isoenzymes (LDH-4 and LDH-5) are sensitive to cold exposure and cooling the sample may result in variable decreases in the LDH activity depending on the isoenzyme composition of the sample.
CPT coding 83615
LOINC code 2532-0
Last Updated 4/18/2012 4:44:22 PM
Entry Number 589
Lab Procedure Link Click here for Procedure

If you have additional questions regarding this test, please call: 415-353-1667

Search Our Test Menu
UCSF home page UCSF home page About UCSF Search UCSF UCSF Medical Center