T4 (Thyroxine), Total Only, Serum or Plasma

T4

Performing Lab:

Saint Luke's Regional Laboratories

Container Type:

Serum gel tube or green top (heparin) tube

Specimen Type:

Serum or plasma

Preferred Volume:

2 mL

Minimum Volume:

1 mL

Collection Procedure:

1. Indicate serum or plasma on the request form.
2. Label the specimen appropriately (serum or plasma).

Store and Transport:

Room Temperature: < 12 hours
Refrigerated: > 12 hours

CPT Codes:

84436 -T4 (EAP 30015140)

Test Schedule:

Monday through Sunday

Reference Ranges:

4.5 - 10.9

μg/dL

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