American Society for Clinical Pathology

Five Things Physicians and Patients Should Question

Released February 21, 2013

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Don’t perform population based screening for 25-OH-Vitamin D deficiency.

Vitamin D deficiency is common in many populations, particularly in patients at higher latitudes, during winter months and in those with limited sun exposure. Over the counter Vitamin D supplements and increased summer sun exposure are sufficient for most otherwise healthy patients. Laboratory testing is appropriate in higher risk patients when results will be used to institute more aggressive therapy (e.g., osteoporosis, chronic kidney disease, malabsorption, some infections, obese individuals).


Don’t perform low risk HPV testing.

National guidelines provide for HPV testing in patients with certain abnormal Pap smears and in other select clinical indications. The presence of high risk HPV leads to more frequent examination or more aggressive investigation (e.g., colposcopy and biopsy). There is no medical indication for low risk HPV testing (HPV types that cause genital warts or very minor cell changes on the cervix) because the infection is not associated with disease progression and there is no treatment or therapy change indicated when low risk HPV is identified.


Avoid routine preoperative testing for low risk surgeries without a clinical indication.

Most preoperative tests (typically a complete blood count, Prothrombin Time and Partial Prothomboplastin Time, basic metabolic panel and urinalysis) performed on elective surgical patients are normal. Findings influence management in under 3% of patients tested. In almost all cases, no adverse outcomes are observed when clinically stable patients undergo elective surgery, irrespective of whether an abnormal test is identified. Preoperative testing is appropriate in symptomatic patients and those with risks factors for which diagnostic testing can provide clarification of patient surgical risk.


Only order Methylated Septin 9 (SEPT9) to screen for colon cancer on patients for whom conventional diagnostics are not possible.

Methylated Septin 9 (SEPT9) is a plasma test to screen patients for colorectal cancer. Its sensitivity and specificity are similar to commonly ordered stool guaiac or fecal immune tests. It offers an advantage over no testing in patients that refuse these tests or who, despite aggressive counseling, decline to have recommended colonoscopy. The test should not be considered as an alternative to standard diagnostic procedures when those procedures are possible.


Don’t use bleeding time test to guide patient care.

The bleeding time test is an older assay that has been replaced by alternative coagulation tests. The relationship between the bleeding time test and the risk of a patient’s actually bleeding has not been established. Further, the test leaves a scar on the forearm. There are other reliable tests of coagulation available to evaluate the risks of bleeding in appropriate patient populations.

These items are provided solely for informational purposes and are not intended as a substitute for consultation with a medical professional. Patients with any specific questions about the items on this list or their individual situation should consult their physician.

Founded in 1922 in Chicago, the American Society for Clinical Pathology (ASCP) is a medical professional society with more than 100,000 member board-certified anatomic and clinical pathologists, residents and fellows, laboratory professionals, and students. ASCP provides excellence in education, certification, and advocacy on behalf of patients, pathologists, and laboratory professionals.

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How this list was created: The American Society for Clinical Pathology (ASCP) list was developed under the leadership of the chair of ASCP’s Institute Advisory Committee and Past President of ASCP. Subject matter and test utilization experts across the fields of pathology and laboratory medicine were included in this process for their expertise and guidance. The review panel examined hundreds of options based on both the practice of pathology and evidence available through an extensive review of the literature. The laboratory tests targeted in our recommendations were selected because they are tests that are performed frequently; there is evidence that the test either offers no benefit or is harmful; use of the test is costly and it does not provide higher quality care; and, eliminating it or changing to another test is within the control of the clinician. The final list is not exhaustive (many other tests/procedures were also identified and were also worthy of consideration), but the recommendations, if instituted, would result in higher quality care, lower costs, and more effective use of our laboratory resources and personnel.

ASCP’s disclosure and conflict of interest policy can be found at



Sattar N, Welsh P, Panarelli M, Forouchi NG. Increasing requests for vitamin D measurement: Costly, confusing, and without credibility. Lancet [Internet]. 2012 Jan 14 [cited 2012 Oct 12];379:95-96.

Bilinski K, Boyages S. The rising cost of vitamin D testing in Australia: time to establish guidelines for testing. Med J Aust [Internet]. 2012 Jul 16 [cited 2012 Oct 12];197 (2):90.

Lu CM. Pathology consultation on vitamin D testing: Clinical indications for 25(OH) vitamin D measurement [Letter to the editor]. Am J Clin Pathol [Internet]. 2012 May [cited 2012 Oct 12];137:831.

Holick M, Binkely N, Bischoll-Ferrari H, Gordon CM, Hanley DA, Heaney RP, Murad MH, Weaver CM; Endocrine Society. Evaluation, treatment, and prevention of vitamin D deficiency: An Endocrine Society Clinical Practice Guideline. J Clin Endocrinol Metab [Internet]. 2011 Jul [cited 2012 Oct 12];96(7):1911-1930.


Lee JW, Berkowitz Z, Saraiya M. Low-risk human papillomavirus testing and other non recommended human papillomavirus testing practices among U.S. health care providers. Obstet Gynecol. 2011 Jul;118(1):4-13.

Saslow D, Solomon D, Lawson HW, Killackey M, Kulasingam SL, Cain J, Garcia FA, Moriarty AT, Waxman AG, Wilbur DC, Wentzensen N, Downs LS Jr, Spitzer M, Moscicki AB, Franco EL, Stoler MH, Schiffman M, Castle PE, Myers ER; ACS-ASCCP-ASCP Cervical Cancer Guideline Committee. American Cancer Society, American Society for Colposcopy and Cervical Pathology, and American Society for Clinical Pathology Screening Guidelines for the Prevention and early Detection of Cervical Cancer. Am J Clin Pathol [Internet]. 2012 May-Jun [cited 2012 Oct 12];137:516-542.

Zhao C, Chen X, Onisko A, Kanbour A, Austin RM. Follow-up outcomes for a large cohort of U.S. women with negative imaged liquid-based cytology findings and positive high risk human papillomavirus test results. Gynecol Oncol [Internet]. 2011 Aug [cited 2012 Oct 12];122:291–296.

American Society for Colposcopy and Cervical Pathology. Descriptions of new FDA-approved HPV DNA tests. HPV Genotyping Clinical Update.[Internet]. Frederick (MD): American Society for Colposcopy and Cervical Pathology. 2009. [Cited 2012 Oct 12]. Available from:


Keay L, Lindsley K, Tielsch J, Katz J, Schein O. Routine preoperative medical testing for cataract surgery. Cochrane Database of Systematic Reviews. 2012, Issue 3. Art. No.: CD007293. DOI: 10.1002/14651858.CD007293.pub3.

Katz R, Dexter F, Rosenfeld K, Wolfe L, Redmond V, Agarwal D, Salik I, Goldsteen K, Goodman M, Glass PS. Survey study of anesthesiologists’ and surgeons’ ordering of unnecessary preoperative laboratory tests. Anesth Analg. 2011 Jan;112(1).

Munro J, Booth A, Nicholl J. Routine preoperative testing: A systematic review of the evidence. Health Technol Assessmen. 1997;1(12).

Reynolds TM. National Institute for Health and Clinical Excellence guidelines on preoperative tests: The use of routine preoperative tests for elective surgery. Ann Clin Biochem [Internet]. 2006 Jan [cited 2012 Oct 12];43:13-16.

Capdenat Saint-Martin E, Michel P, Raymond JM Iskandar H, Chevalier C, Petitpierre MN, Daubech L, Amouretti M, Maurette P. Description of local adaptation of national guidelines and of active feedback for rationalizing preoperative screening in patients at low risk from anaesthetics in a French university hospital. Qual Health Care [Internet]. 1998 Mar [cited 2012 Oct 12];7:5-11.


Rösch T, Church T, Osborn N, Wandell M, Lofton-Day C, Mongin S, Blumenstein BA, Allen JI, Snover D, Day R, Ransohoff DF. Prospective clinical validation of an assay for methylated SEPT9 DNA for colorectal cancer screening in plasma of average risk men and women over the age of 50. Gut. 2010;59(suppl III):A307.

Ahlquist DA, Taylor WR, Mahoney DW, Zou H, Domanico M, Thibodeau SN, Boardman LA, Berger BM, Lidgard GP. The stool DNA test is more accurate than the plasma septin 9 test in detecting colorectal neoplasia. Clin Gastroenterol Hepatol. [Internet]. 2012 Mar [cited 2012 Oct 12];10(3):272-7.


Lehman CM, Blaylock RC, Alexander DP, Rodges GM. Discontinuation of the bleeding time test without detectable adverse clinical impact. Clin Chem [Internet]. 2001;47(7) [cited 2012 Oct 12]:1204-1211.

Peterson P, Hayes TE, Arkin CF, Bovill EG, Fairweather RB, Rock WA Jr, Triplett DA, Brandt JT. The preoperative bleeding time test lacks clinical benefit. Arch Surg [Internet]. 1998 Feb [cited 2012 Oct 20];133(2):134-139.

Lind SE. The bleeding time does not predict surgical bleeding. Blood [Internet]. 1991 Jun [cited 2012 Oct 20]; 77(12):2547-52.