Mohammad S Atefi

US Patent:

8329417, Dec 11, 2012

Filed:

Dec 23, 2011

Appl. No.:

13/336119

Inventors:

Virginia Hill - Los Angeles CA, US
Mohammad Atefi - Los Angeles CA, US
Michael I. Schaffer - Los Angeles CA, US

Assignee:

Psychemedics Corporation - Acton MA

International Classification:

G01N 33/53

US Classification:

435 71, 435 792, 435692, 436541

Abstract:

Methods that permit the rapid release of one or more analytes from head or body hair or other keratinized structures of an individual (who may previously have ingested one or more of the analytes) are provided. The methods can include contacting the keratinized structure with a reducing agent but not with a proteolytic agent. The methods can further include identification and quantification of the one or more analytes by known analytical techniques such as immunoassays. The described methods do not damage the analyte and do not cause harmful effects on a subsequently-used analyte detection probe (e. g. , an antibody).

US Patent:

8435747, May 7, 2013

Filed:

Apr 29, 2009

Appl. No.:

12/990447

Inventors:

Virginia Hill - Los Angeles CA, US
Mohammad Atefi - Los Angeles CA, US
Michael I. Schaffer - Los Angeles CA, US

Assignee:

Psychemedics Corporation - Acton MA

International Classification:

G01N 33/53

US Classification:

435 71, 436518

Abstract:

Methods that permit the rapid release of one or more analytes from head or body hair or other keratinized structures of an individual (who may previously have ingested one or more of the analytes) are provided. The methods can include contacting the keratinized structure with a reducing agent but not with a proteolytic agent. The methods can further include identification and quantification of the one or more analytes by known analytical techniques such as immunoassays. The described methods do not damage the analyte and do not cause harmful effects on a subsequently-used analyte detection probe (e. g. , an antibody).

US Patent:

20110118138, May 19, 2011

Filed:

Apr 29, 2009

Appl. No.:

12/990451

Inventors:

Virginia Hill - Los Angeles CA, US
Mohammad Atefi - Los Angeles CA, US
Michael I. Schaffer - Los Angeles CA, US

International Classification:

C40B 30/04
G01N 33/543
G01N 33/53
C40B 40/00
C40B 40/04

US Classification:

506 9, 436518, 435 79, 435 71, 506 13, 506 15

Abstract:

Compositions and methods for detecting the presence and/or amount of one or more analytes, including analytes such as drugs of abuse, are provided. The compositions include two or more analytes associated with a solid phase, e.g., a particle or a multiwell plate. The compositions and methods also allow the simultaneous, tandem, or serial determination of the presence and/or amount of two or more analytes of interest in a sample.

US Patent:

8084215, Dec 27, 2011

Filed:

Apr 29, 2008

Appl. No.:

12/111914

Inventors:

Virginia Hill - Los Angeles CA, US
Mohammad Atefi - Los Angeles CA, US
Michael I. Schaffer - Los Angeles CA, US

Assignee:

Psychemedics Corporation - Acton MA

International Classification:

G01N 33/53

US Classification:

435 71, 435 792, 435962, 436541

Abstract:

Methods that permit the rapid release of one or more analytes from head or body hair or other keratinized structures of an individual (who may previously have ingested one or more of the analytes) are provided. The methods can include contacting the keratinized structure with a reducing agent but not with a proteolytic agent. The methods can further include identification and quantification of the one or more analytes by known analytical techniques such as immunoassays. The described methods do not damage the analyte and do not cause harmful effects on a subsequently-used analyte detection probe (e. g. , an antibody).