Thyroxine, Total (T4) Human ELISA

Cat. No.	Size	Price
RCD026R	96 wells (1 kit)

Technical Data

Type

Competitive ELISA, Immobilized antigen

Applications

Serum

Sample Requirements

20 µl/well

Shipping

At ambient temperature. Upon receipt, store the product at the temperature recommended below.

Storage/Expiration

Store the complete kit at 2–8°C. Under these conditions, the kit is stable until the expiration date (see label on the box).

Calibration Curve

Calibration Range

1–32 µg/dl

Limit of Detection

0.6 µg/dl

Spiking Recovery

104,80%

Dilution Linearity

104,40%

Summary

Research topic

Others

Summary

Clinical Trends:

The level of T4 in hypothyroid patients is decreased.
The level of T4 in hyperthyroid patients is increased.
In euthyroid individuals the level of T4 is within the normal range.

Thyroid binding globulin (TBG) levels have reportedly been elevated by the following conditions: increased estrogens from oral contraceptives, androgens, glucocorticords and pregnancy. Consequently, borderline T4 values should be viewed with caution when any of the above conditions are present.

Summary References (8)

References to Thyroxine

Comoglio S, Celada F. An immuno-enzymatic assay of cortisol using E. coli beta-galactosidase as label. J Immunol Methods. 1976 Mar;10 (2-3):161-70
Ingbar SH, Braverman LE, Dawber NA, Lee GY. A new method for measuring the free thyroid hormone in human serum and an analysis of the factors that influence its concentration. J Clin Invest. 1965 Oct;44 (10):1679-89
McComb RB, Bowers GN, Posen S. Alkaline Phosphatase. Plenum Press, New York. 1979;1st Ed., Chap. 9:525-704
Robbins J. Radioassay and the thyroid gland. Metabolism. 1973 Aug;22 (8):1021-6
Schall RF Jr, Fraser AS, Hansen HW, Kern CW, Tenoso HJ. A sensitive manual enzyme immunoassay for thyroxine. Clin Chem. 1978 Oct;24 (10):1801-4
Selenkow HA, Robin NI. The diagnosis and management of common thyroid diseases. J Maine Med Assoc. 1970 Oct;61 (10):199-211 passim
Sterling K, Hegedus A. Measurement of free thyroxine concentration in human serum. J Clin Invest. 1962 May;41:1031-40
Surks MI, Squef R, Oppenheimer JH, Hauer H. Binding of Thyroxine by serum proteins evaluated by equilibrum dialysis and electrophoretic techniques. Alterations in nonthyroidal illness. J Clin Invest.. 1963 Nov; 42 :1769-82

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