Dilution station for instructors
Dilute a specimen above the measuring range and report the result.
Class links
Single CK dilutions About 5 minutes
Each order is a CK result above the measuring range, with the dilution the order asks for.
Serial dilutions About 10 minutes
The learner builds the series tube by tube and calculates each dilution and the cumulative factor.
- Twofold seriesFull access
- Tenfold seriesFull access
- Mixed seriesFull access
Numbered cases
- Practice case 1, independentAbout 10 minutesFull access
A specimen above the measuring range, generated from case number 1. Any number from 1 to 99,999 gives its own case. The same number always gives the same specimen, order and values. After a student's first few finished practice cases, a case may also include a bench fault, and the printed record names it.
- Titer rack 1, independentAbout 10 minutesFull access
Doubling dilutions of a patient's serum, read tube by tube, then the titer is reported. The number works the same way as a practice case.
- Worksheet review 1About 5 minutesFull access
Another laboratory professional's finished dilution worksheet. The learner finds the one line that makes the result unreliable.
Assignment text
Open the link and complete the dilution at the Dilution station. When the Verification sheet appears, choose Print record and hand in the printed record. Be ready to show how you chose your volumes and how you calculated the reported result.
What learners practice
- Recognize a result above the analyzer's measuring range and prepare the dilution the procedure calls for.
- Choose sample and diluent volumes that make the ordered dilution.
- Make a serial dilution and calculate each tube's dilution and the cumulative dilution factor.
- Multiply the diluted reading by the dilution factor and report the patient's result with its unit.
Read first
What the record shows
- The case or series, and whether guided help was on
- The volumes the learner prepared and the readings they produced
- The dilution factor and the result the learner reported
- Each check and the mistake behind any wrong answer
The record stays with the learner until they hand it in.
How it's scored
- Each step is checked against the ordered dilution and the volumes actually prepared. A wrong report names the calculation mistake.
- There is no overall percentage. The Verification sheet shows each check as met or missed.
Accessibility
- Every control can be reached with Tab and used with Enter or Space.
- The drawing is decoration. Every action has a named control, and every reading is also written as text.
- Screen changes use short animations and become instant when the device is set to reduce motion.
- The printed record uses real headings and tables and prints on Letter or A4. It has a blank Name line. The site stores no name.