RT Journal Article SR Electronic T1 Laboratory samples deemed ‘unsuitable for analysis’ can be diagnostically useful JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 309 OP 311 DO 10.7861/clinmedicine.13-3-309 VO 13 IS 3 A1 P Sen Gupta A1 M Sharma A1 PM Timms YR 2013 UL http://www.rcpjournals.org/content/13/3/309.abstract