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Laboratory screening technique for filariasis in tropical endemic area: Thick smear versus buffy coat capillary tube versus low-concentration normal saline technique: A cost analysis


1 KMT Center, Bangkok, Thailand
2 Department of Community Medicine, Dr DY Patil University; Research Center, Parasitic Disease Research Unit, Suranaree University of Technology, Nakhon Ratchasima, Thailand Pune, Maharashtra, India

Date of Submission30-Mar-2021
Date of Decision30-Apr-2021
Date of Acceptance28-May-2021

Correspondence Address:
Sora Yasri,
KMT Center, Bangkok
Thailand
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/mjdrdypu.mjdrdypu_236_21



How to cite this URL:
Yasri S, Wiwanitkit V. Laboratory screening technique for filariasis in tropical endemic area: Thick smear versus buffy coat capillary tube versus low-concentration normal saline technique: A cost analysis. Med J DY Patil Vidyapeeth [Epub ahead of print] [cited 2022 Dec 6]. Available from: https://www.mjdrdypv.org/preprintarticle.asp?id=345907



Dear Sir,

Lymphatic filariasis is an important tropical disease. For disease control, screening by laboratory technique plays an important role. The blood test is routinely used for screening for microfilarial parasites.[1] There are many alternative laboratory techniques for screening. The different techniques might provide different diagnostic properties and result in different epidemiological records; hence, standardization is needed.[2] In addition, it is necessary to analyze on cost for planning for implementation of a laboratory technique.

Here, the authors performed a reappraise on the data of filariasis screening from an endemic tropical area, Myanmar–Thailand border area (GPS location 13.392118426381861, 99.5372683229726). The three alternative studied techniques are (a) thick smear, (b) buffy coat capillary tube, and (c) low-concentration normal saline techniques. The primary data are from the previous study on the diagnostic property, detection rate, of the three techniques,[3] and the data on local cost in USD. The cost–utility analysis is done and the results are shown in [Table 1]. It seems that the cost of low-concentration normal saline technique is the lowest. From incremental cost analysis, low-concentration normal saline technique has an incremental cost per utility comparing to thick smear and buffy coat capillary tube equal to 0.35 and 0.25 USD, respectively.
Table 1: Comparison of laboratory screening technique for filariasis in tropical endemic area

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Financial support and sponsorship

Nil.

Conflicts of interest

There are no conflicts of interest.



 
  References Top

1.
Mathison BA, Couturier MR, Pritt BS. Diagnostic identification and differentiation of microfilariae. J Clin Microbiol 2019;57:e00706-19.  Back to cited text no. 1
    
2.
Vinkeles Melchers NV, Coffeng LE, de Vlas SJ, Stolk WA. Standardisation of lymphatic filariasis microfilaraemia prevalence estimates based on different diagnostic methods: A systematic review and meta-analysis. Parasit Vectors 2020;13:302.  Back to cited text no. 2
    
3.
Taokaew K, Pipatsatitpong D. Evaluation of low concentration normal saline technique for microfilaria detection in migrant workers at Pak Tho Hospital, Ratchaburi Province. J Med Tech Assoc Thailand 2018;46:466578-88.  Back to cited text no. 3
    



 
 
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