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Method for determining follicle stimulating hormone

  • US 4,921,808 A
  • Filed: 06/25/1986
  • Issued: 05/01/1990
  • Est. Priority Date: 06/25/1986
  • Status: Expired due to Term
First Claim
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1. In a method for the determination of follicle stimulating hormone in a sample, comprising the steps of:

  • (a) contacting said sample with a purified follicle stimulating hormone receptor preparation capable of selectively binding said hormone;

    (b) providing a signalling entity for signalling whether said binding has taken place; and

    (c) observing said signalling entity to determine the presence of said hormone in said sample,the improvement comprising said signalling entity being a substantially pure follicle stimulating hormone labeled with a detectable label, in which labeled hormone the ratio of specific binding to non-specific binding is at least about 5 when measured using a partially purified calf testes plasma membrane preparation containing from about 5 to about 25 fmol of receptors per milligram of membrane wet weight, and said purified follicle stimulating hormone receptor preparation having at least about 600 fmol/mg protein of high affinity receptors for follicle stimulating hormone.

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