Testing out the Spark Mobile Diagnostics Vitamin D 25(OH)D Self-Test.

This test uses in vitro diagnostic technology and Sparks mobile app, developed for both Android and iPhone, to scan and analyze your Vitamin D level, without ever leaving home.

If you are in New Zealand, you can order and have it delivered to your door here: [ Ссылка ]

These are available in many other countries, throughout Europe, India & South Africa.
South Africa: [ Ссылка ]
India: [ Ссылка ]

For wholesale inquiries or to review the technical specifications, reach out to Pritesh Patel via the Spark Diagnostics website below, mention I sent you and I am sure he will accommodate your inquiry. [ Ссылка ]

Regarding specificity and accuracy; this is an exert from the flyer insert:

PERFORMANCE CHARACTERISTICS:

Sensitivity:
The limit of detection (LOD) of SPARK-D Quantitative Vitamin D Test is 4 ng/ml (10 nmol/l).

Detection Range:
The Detection Range of SPARK-D Quantitative Vitamin D Test with SPARK-D Reader is from 4 ng/ml (10 nmol/l) to 100 ng/ml (250 nmol/I).

Accuracy:
The accuracy of SPARK-D Quantitative Vitamin D Test was evaluated using human finger-
prick blood samples in comparison with a reference 25-OH Vitamin D ELISA assay using
corresponding serum samples. The comparison result showed a linear regression with slope
of 1.02 and Correlation Coefficient of 92%. In conclusion, SPARK-D test results of human
blood samples showed good agreement with the ELISA results of corresponding serum
samples.

The accuracy of SPARK-D Quantitative Vitamin D Test was also evaluated using 20 serum
samples in comparison with LC-MS/MS Assay (“Gold Standard” for 25-OH Vitamin D
measurement). The comparison result showed a linear regression with the slope of 0.97 and
Correlation Coefficient of 98%. In conclusion, SPARK-D Quantitative Vitamin D Test results
agree closely to the true values generated from LC-MS/MS assay.

Specificity:
30 Vitamin D free serum samples were tested and all showed negative results; suggesting 100% specificity.

Limitations:
No interference and cross reactivity were observed with Bilirubin, Triglycerides, Cholesterol, Vitamin B12 and Vitamin C.

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