Table 1.

Laboratory values by immunoassay and LC-MSMS on the same sample for a 30 year-old euthyroid male with AIDS-related Kaposi’s sarcoma.

	Value	Reference range
Immunoassay results
FT4	0.66 ng/dL	0.8 – 1.5 ng/dL
FT3	1.41 pg/mL	1.8 – 4.2 pg/mL
TT3	42 ng/dL	90 – 215 ng/dL
TT4	3.1 ug/dL	4.5 – 12.5 ug/dL
TSH	3.52 uIU/mL	0.36 – 4.0 uIU/mL
TBG	4.3 ug/mL	13 – 39 ug/mL
LC-MSMS results
FT4	1.8 ng/dL	0.8 – 2.0 ng/dL
FT3	1.7 pg/mL	1.5 – 6.0 pg/mL
TT3	25.2 ng/dL	80 – 187 ng/dL
TT4	2.4 ug/dL	4.9 – 10.5 ug/dL
rT3	10.7 ng/dL	9 – 21 ng/dL

AIDS = Acquired immunodeficiency syndrome

T3 ng/dLx 0.0154 = T3 nmole/L

T4 ug/dL x 12.87=T4 nmole/L