Trichomonas vaginalis survey, TR1910 – Shipped September 23, 2019

TR1910-1: Positive TR1910-2: Negative TR1910-3: Negative TR1910-4: Positive


Participant’s results

Positive35 (Acceptable)0035 (Acceptable)
Negative035 (Acceptable)35 (Acceptable)0


Suitability for grading

A challenge is considered suitable for grading if agreement is reached by 80% of the selected reference group and at least 70% of the participants.

Trichomonas determination was correctly performed by 3/3 reference laboratories and greater than 70% of all laboratories and was thus determined to be suitable for grading.

The samples are assessed for homogeneity and stability using in-house quality control methods and random selection of samples before and during production, and post sample delivery. The number of random samples selected is based on selection tables within Military standard 105E (1).

All samples were produced by CMPT. Samples were randomly selected for QC/QA. Statistics are not applicable for qualitative surveys.

Samples TR1910-1 and TR1910-4 were positive and were homogenous and stable for 26 days from the date of production, September 13, 2019.

Samples TR1910-2 and TR1910-3 were negative and were homogenous and stable for 33 days from the date of production, September 12, 2019.

Grading of Trichomonas vaginalis is based on a Positive / Negative result, no further statistical analysis is performed on the results beyond that described under “Suitability for grading.”

(1) Famum NR. Acceptance sampling. In: Modern Statistical Quality Control and Improvement. Belmont, California.: Duxbury Press; 1994:305.

Posted in critiques, Trichomonas vaginalis Results