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Testosterone, Free and Weakly Bound Add to Wishlist   
LabCorp Price: $164.99
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New! Testosterone, Free, Bioavailable and Total, LC/MS/MS Add to Wishlist   
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Testosterone, Free and Weakly Bound - (LABCORP)

Description: Free and weakly bound testosterone (FWBT), also referred to as bioavailable testosterone, is thought to reflect an individual's biologically active, circulating testosterone. FWBT includes free testosterone and testosterone that is bound to albumin. FWBT does not include sex hormone binding globulin-bound testosterone. The SHBG-bound fraction is biologically inactive because of the high binding affinity of SHBG for testosterone. The rapid dissociation of “weakly bound” testosterone from albumin results in the availability of essentially all albumin-bound testosterone for steroid-receptor interaction.

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. If you are taking any of these it is recommended that you order the Testosterone, Total, Women, Children, and Hypogonadal Males, LC/MS-MS for testing.

A significant deviation from the normal range may require further evaluation by your physician.

Includes:
Total testosterone,
% Free+Weakly Bound Testosterone,
F+W Bound Testosterone (calculated)

Note: If total testosterone results are expected to be >1500 it is best that the Testosterone LC/MS-MS version of this test be ordered. When total testosterone results are >1500, the F+W Bound component will also report as a greater than value.

Patient Instructions: 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 7 business days. If confirmation testing is required, the estimated time may be extended.

Categories: Hormones and Metabolism, Male Specific Tests

LabCorp Price: $164.99   Add LC To Cart


Testosterone, Free, Bioavailable and Total, LC/MS/MS - (QUEST DIAGNOSTICS)

Description: Free and weakly bound testosterone (FWBT), also referred to as bioavailable testosterone, is thought to reflect an individual's biologically active, circulating testosterone. Helpful in assessing testicular function in males and managing hirsutism, virilization in females.
This testosterone test will also provide Total Testosterone results when the value is >1500 but <10,000.

Significant deviations from the normal range may require further evaluation by your physician.



Includes:
Testosterone, Total, LC/MS/MS
Testosterone, Free
Testosterone, Bioavailable
Sex Hormone Binding Globulin (SHBG)
Albumin


Patient Instructions: 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.

Estimated turnaround for results is 7 business days. If confirmation testing is required, the estimated time may be extended.

Categories: Hormones and Metabolism, Male Specific Tests

Quest Diagnostics Price: $95.49   Add QD To Cart

Testosterone, Free and Weakly Bound, With Total Testosterone, LC/MS-MS Add to Wishlist   
LabCorp Price: $173.99
*Build Your Own Panel Eligible [?]

New! Testosterone, Free, Bioavailable and Total, LC/MS/MS Add to Wishlist   
Quest Diagnostics Price: $95.49
*Build Your Own Panel Eligible [?]




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