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Lab Test Dictionary

Thyroglobulin, Fine Needle Aspirate (16559)



Specimen Type

See Below

Performing Lab

Quest Diagnostics San Juan Capistrano

Epic ID

Other Reference Test

Lab Test Days

Tuesday, Thursday and Saturday

Standard TAT

4-5 Days

Collection Information

Specimen Required

0.8-1 mL fine needle aspirate (FNA) collectedin a sterile transport tube

Container Type

See Below

Collection Instructions

1 mL node washing or saline node washing is also acceptable. A 25-gauge needle is inserted obliquely within the transducer plane of view and moved back and forth through the nodule to compensate for patient movement and needle deflection. There is no suction device; cells move into the needle via capillary action. Three to six separate passes are performed, each with a new needle. After collection of the cytology samples, each FNA needle is then washed with 0.1-0.5 mL of normal saline; the washes from all needles are pooled (final volume 1 mL) and immediately frozen. and then transported to the laboratory directly.

Processing Information - Lab Use Only

Transport Temperature


Specimen Stability

Room temperature: 7 Days; Refrigerated: 7 Days; Frozen: 28 Days

Rejection Criteria

Glass tubes

Test Volume Required

1 mL Fine Needle Aspirate

Minimum Test Volume

0.8 mL Fine Needle Aspirate

CPT Codes