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HelpTest Code ICG Indocyanine Green Test
Additional Codes
| Epic Ordering Code | LAB3053537 |
| NBS code | LBC06563 |
| Service code | 31957 |
Specimen Requirements
Submit the following immediately:
| Before ICG Injection (0 min) | After ICG Injection (15 mins) |
| 2x Yellow Top | 1x Yellow Top |
The remaining ICG in the bottle must be sent along with the specimens and labeled with patient's sticky label.
After collection, wrap all blood specimens and drug bottle with aluminium foil before sending to the laboratory.
Processing Requirements
Protect both blood specimens from light
Specimen type: Serum
Volume: 0 min specimen – 3.0 mL
15 min specimen – 1.5 mL
Storage/transport requirements: Refrigerated
Specimen Stability
| Specimen Type | Serum |
|---|---|
| Ambient | Not available |
| Refrigerate | 5 days |
| Frozen | Not available |
Specimen Condition
| Haemolysis | OK |
|---|---|
| Icterus | OK |
| Lipaemia | OK |
| Others: Bottle of ICG dye not included | Reject |
Methodology
Spectrophotometry
Days and Times Performed
Monday through Friday, TAT 3 - 5 days
Reference Interval
0 – 14.9%
Useful For
Liver function test, evaluating biliary clearance
Update
Last updated 31/07/2026
Referring / Testing Laboratory
National University Hospital
Client Services, 67724912
Testing Laboratory
Department of Pathology
Singapore General Hospital
Outram Road
Singapore 169608
63214950
Alias
ICG Retention