Thyroid Stimulating Hormone (TSH) with Reflex to Free T4 Build info

Synonyms

• TSH REFLEX FT4
• TSH with Reflex to FT4
• LAB10537

Short Name

TSH REFLEX FT4

Procedure Master Number

LAB10537

Procedure ID

111578

Clinical Info

Test includes reflex to free T4 for TSH results outside the reference range.

Specimen Type

Blood

Container

Gold Top Tube

Collection Instructions

Container/Tube: Gold-top tube(s)
Specimen Volume: 1 mL of serum
Transport Temperature: Refrigerated
Stability: 8 Days Room Temperature
               14 Days  Refrigerated
               24 Months Frozen
 

Transport Instructions

Refrigerated

Specimen Stability

8 Days Room Temperature
               14 Days  Refrigerated
               24 Months Frozen
 

Methodology

Electrochemiluminescence Immunoassay (ECLIA)
No Biotin interference up to 1200ng/mL

Days Performed

Monday through Sunday, Continuously

Performing Laboratory

Northwell Health Laboratories

CPT

84443-TSH
84439-FT4 (if appropriate)

PDM

5300437

Results