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Thyroid Profile II, Comprehensive

CPT: 84436; 84443; 84479; 84480
Updated on 12/9/2019
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Synonyms

  • Thyroid Profile D (Comprehensive)

Test Includes

Free thyroxine index (FTI); T3 uptake (THBR); thyroid-stimulating hormone (TSH); thyroxine (T4); tri-iodothyronine (T3)

Free thyroxine index (FTI); T3 uptake (THBR); thyroid-stimulating hormone (TSH); thyroxine (T4); tri-iodothyronine (T3)


Special Instructions

This test may exhibit interference when sample is collected from a person who is consuming a supplement with a high dose of biotin (also termed as vitamin B7 or B8, vitamin H, or coenzyme R). It is recommended to ask all patients who may be indicated for this test about biotin supplementation. Patients should be cautioned to stop biotin consumption at least 72 hours prior to the collection of a sample.


Expected Turnaround Time

Within 1 day


Related Documents


Specimen Requirements


Specimen

Serum


Volume

2.5 mL


Minimum Volume

1.5 mL (Note: This volume does not allow for repeat testing.)


Container

Red-top tube or gel-barrier tube


Collection

If a red-top tube is used, transfer separated serum to a plastic transport tube.


Storage Instructions

Refrigerate


Stability Requirements

Temperature

Period

Room temperature

14 days

Refrigerated

14 days

Frozen

14 days

Freeze/thaw cycles

Stable x3


Causes for Rejection

Plasma specimen


Test Details


Methodology

See individual tests.


LOINC® Map

Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
027011 Thyroid Profile II 004264 TSH uIU/mL 11580-8
027011 Thyroid Profile II 001149 Thyroxine (T4) ug/dL 3026-2
027011 Thyroid Profile II 001156 T3 Uptake % 3050-2
027011 Thyroid Profile II 001164 Free Thyroxine Index 32215-6
027011 Thyroid Profile II 002188 Triiodothyronine (T3) ng/dL 3053-6

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