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HelpTest Code LDH Lactate Dehydrogenase
Specimen Requirements
Submit only one of the followings
Preferred
Specimen Type: Serum
Container/Tube: Gold Top (SSTII)
Volume: 5.0mL
Minimum Volume: 0.5 mL Serum
Collection Instructions: Allow specimen to clot for 30 minutes and centrifuge within 2 hours
___________________________________________________________________________
Acceptable
Specimen Type: Plasma
Container/Tube: Green Top (Li Heparin/PST)
Volume: 4.5mL
Minimum Volume: 0.5 mL Plasma
Collection Instructions: Centrifuge within 2 hours
Sample Stability
** Preferred temperatures for storage prior to and during shipping to NUH **
| Specimen Type: | Serum/Plasma |
|---|---|
| Ambient: | 3 days |
| Refrigerate: | 3 days |
| Frozen: | 8 weeks |
Reference Interval
| Age | Male | Female |
|---|---|---|
| 0 - 14 days | 309-1,222 U/L | |
| 15 days - <1 yr | 163-452 U/L | |
| 1 - 9 yrs | 192-321 U/L | |
| 10 - 14 yrs | 170-283 U/L | 157-272 U/L |
| 15 - 18 yrs | 130-250 U/L | |
| ≥19 yrs | 120-250 U/L | |
Note:
LDH may be falsely increased in haemolysed samples.
Days and Times Performed
24 hours, TAT 1 day
Methodology
Lactate to Pyruvate (IFCC)
Service Code
31017
Update
Last updated 15/10/2024
Updated on Sample stability & reference interval
Unacceptable Condition
| Haemolysis | NA |
|---|---|
| Icterus | NA |
| Lipaemic | NA |
| Others | NA |
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Increased in megaloblastic and pernicious anaemia, extensive carcinomatosis, viral hepatitis, shock, hypoxia, extreme hyperthermia, cirrhosis, obstructive jaundice, renal diseases, skeletal muscle diseases, neoplastic diseases and congestive heart failure