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HelpTest Code LDH Lactate Dehydrogenase
Additional Codes
| Epic Ordering Code | LAB96 |
| NBS code | LBC00595 |
| Service code | 31017 |
Specimen Requirements
Submit only one of the following:
| Preferred: | Acceptable: |
| Yellow Top | Light Green Top |
Processing Requirements
Allow specimen to clot for 30 mins (Yellow Top) and centrifuge within 2 hours
Specimen type: Serum/Plasma
Volume: 0.5mL
Specimen Stability
| Specimen Type | Serum/Plasma |
|---|---|
| Ambient | 3 days |
| Refrigerate | 3 days |
| Frozen | 8 weeks |
Specimen Condition
| Haemolysis | Alert/Reject |
|---|---|
| Icterus | OK |
| Lipaemia | OK |
| Others | Not applicable |
Methodology
Enzymatic Assay
Days and Times Performed
24 hrs, TAT 1 day
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.
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.
Update
Last updated 26/07/2026
LOINC Code Information
14804-9