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HelpTest Code ACAB Acetylcholine Receptor Antibodies (ACAB)
Additional Codes
| Epic Ordering Code | LAB5024 |
| NBS code | LBC01333 |
| Service code | 31886 |
Specimen Requirements
Submit only one of the following:
Preferred: Gold top
Acceptable: Red top
Processing Requirements
Allow specimen to clot for 30 mins and centrifuge within 2 hours
Specimen type: Serum
Volume: 0.5 mL
Storage/transport requirements: Refrigerated
Specimen Stability
| Specimen Type | Serum |
|---|---|
| Ambient | 8 hours |
| Refrigerate | 1 week (preferred) |
| Frozen | 6 months |
Specimen Condition
| Gross Haemolysis | Reject |
|---|---|
| Gross Icterus | Reject |
| Gross Lipaemia | Reject |
| Others | Not applicable |
Methodology
Radioimmunoassay
Days and Times Performed
Thursday, TAT 8 - 16 days
Reference Interval
| Negative | < 0.25 nmol/L |
|---|---|
| Borderline | 0.25 – 0.40 nmol/L |
| Positive | > 0.40 nmol/L |
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724399
Useful For
Autoantibodies to acetylcholine receptor are responsible for failure of the neuromuscular junction in myastenia gravis and measurement of the antibodies can be of value in disease diagnosis.
Update
Last updated 23/04/2026
LOINC Code Information
68937-2