Total reviews 411
Total reviews 411
Tests Included: 1
Est. 1-3 (business days) Turnaround
Specimen type: Blood
Quest Diagnostics Location
This blood test measures the level of the hormone T4 (thyroxine), which the thyroid gland produces to aid in metabolism control and growth. This test is often ordered in conjunction with other thyroid tests such as T3 and TSH to evaluate thyroid function.
Tests Included: 1
Est. 1-3 (business days) Turnaround
Specimen type: Blood
Quest Diagnostics Location
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Please do not exercise prior to testing. It is best that your blood is taken in a rested state.
Note: Turn around times on results are an estimate and are not guaranteed. The lab may need additional time due to holidays, confirmation/repeat testing, etc. You can contact us to discuss when your results should be ready and we will contact the lab on your behalf immediately.
T4 (Thyroxine), Total
| Male (mcg/dL) | Female (mcg/dL) | ||||
| <1 Month | 4.5-17.2 | 4.5-17.2 | |||
| 1-23 Months | 5.9-13.9 | 5.9-13.9 | |||
| 2-12 Years | 5.7-11.6 | 5.7-11.6 | |||
| 13-20 Years | 5.1-10.3 | 5.3-11.7 | |||
| >20 Years | 4.9-10.5 | 5.1-11.9 |
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