Use of synthetic steroids, various supplements and/or high doses of biotin may interfere with the accuracy of the standard immunoassay Testosterone Total serum test included in this panel. If you are taking any of these it is recommended that you order a panel that includes the Testosterone LC/MS-MS methodology for testing.
Significant deviations from the normal range may require further evaluation by your physician.
Complete Blood Count (CBC) with Differential: (Hematocrit; hemoglobin; mean corpuscular volume (MCV); mean corpuscular hemoglobin (MCH); mean corpuscular hemoglobin concentration (MCHC); red cell distribution width (RDW); percentage and absolute differential counts; platelet count; red cell count; white blood cell count; immature granulocytes)
Thyroid Profile II (Comprehensive): Free thyroxine index (FTI or T7); T3 uptake (THBR); thyroid-stimulating hormone (TSH); thyroxine (T4), Total; tri-iodothyronine (T3), Total
Thyroxine Free, Direct (FT4)
Dehydroepiandrosterone Sulfate (DHEA-s)
Testosterone, Serum (Total Only)
Luteinizing Hormone (LH)
Follicle-Stimulating Hormone (FSH)
Tri-iodothyronine Free, Serum (FT3)
Note: If testosterone levels are expected to be >1500, it is best that you order a panel that includes Testosterone LC/MS-MS as the testosterone test included in this panel has a cutoff of 1500. Reporting values that exceed 1500 will now be reported as >1500 for all regions, as this standard operating procedure will now be nationwide.
If using a testosterone cream please be sure you have not rubbed any into the antecubital area of your arm for the last 24 hours as it can give elevated results. 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 stop biotin consumption at least 72 hours prior to the collection of specimen. Estimated turnaround for results is 3 business days. If confirmation testing is required, the estimated time may be extended.