Alternate Sample Type: To assess the
effect of alternate sample types, blood
was collected from 33 volunteers into
plain, heparinized, and Becton Dickinson
®
SST
Vacutainer tubes. Equal volumes of
the matched samples were spiked with
various concentrations of estradiol, to
obtain values throughout the calibration
range of the assay, and then assayed by
the IMMULITE 2000 Estradiol procedure.
(Heparin) = 0.98 (Serum) + 11 pg/mL
r = 0.996
(SST) = 0.98 (Plain Tubes) + 15 pg/mL
r = 0.994
Means:
476 pg/mL (Serum)
477 pg/mL (Heparin)
482 pg/mL (SST)
Method Comparison: The assay was
compared to IMMULITE Estradiol on
97 samples. (Concentration range:
approximately 20 to 1800 pg/mL. See
graph.) By linear regression:
(IML 2000) = 0.90 (IML) + 18 pg/mL
r = 0.990
Means:
337 pg/mL (IMMULITE 2000)
354 pg/mL (IMMULITE)
References
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IMMULITE 2000 Estradiol (PIL2KE2-28, 2016-05-23)