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HelpTest Code TTRX Amyloidosis, Transthyretin-Associated Familial, Reflex, Blood
Reflex Tests
| Test ID | Reporting Name | Available Separately | Always Performed |
|---|---|---|---|
| TTRZ | TTR Gene, Full Gene Analysis | Yes | No |
Testing Algorithm
If familial amyloidosis by liquid chromatography-mass spectrometry is abnormal, DNA sequencing will be performed at an additional charge.
For more information see Amyloidosis (Familial) Test Algorithm.
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
Whole bloodShipping Instructions
Specimen must arrive within 4 days of collection. Specimens are stabilized upon receipt and stored until testing is performed.
Specimen Required
Container/Tube:
Preferred: Lavender top (EDTA)
Acceptable: Yellow top (ACD)
Specimen Volume: 3 mL
Collection Instructions:
1. Invert several times to mix blood.
2. Send whole blood specimen in original tube. Do not aliquot.
Specimen Minimum Volume
0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Whole blood | Refrigerated (preferred) | 4 days | |
| Ambient | 4 days |
Special Instructions
Reference Values
An interpretive report will be provided.
Day(s) Performed
Tuesday
CPT Code Information
82542
81404 (if appropriate)
Report Available
3 to 9 daysReject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
| Gross icterus | OK |
Method Name
Affinity Chromatography/Mass Spectrometry (MS)
Forms
If not ordering electronically, complete, print, and send 1 of the following forms with the specimen: