KDP categories · Top KDP authors
Ruth E. McCall: Amazon KDP author data
As of Nov 6, 2026, Ruth E. McCall has 19 books on Amazon, 14 of them on a best-seller list in the last 30 days (best rank #1), mostly in Laboratory Medicine, Diagnostics & Labs, Medical Assistants.
| Median price | $56.25 |
|---|---|
| Price range (middle 50%) | $40.06 – $84.35 |
| Median reviews | 183 |
| Total reviews | 5,640 |
| New books (30 days) | 0 |
| Breakout books (30 days) | 0 |
What stands out
- 74% of the catalog made a best-seller list in the last 30 days: the whole backlist sells, not one hit.
Ruth E. McCall's best-ranked books
-
Phlebotomy Essentials
by Ruth E. McCall
- Price$85.73
- Rating4.7
- Reviews319
- Published2023-08
-
Phlebotomy Essentials
by Ruth E. McCall
- Price$86.22
- Rating4.7
- Reviews319
-
Student Workbook for Phlebotomy Essentials
by Ruth E. McCall
- Price$39.11
- Rating4.8
- Reviews117
-
Phlebotomy Essentials + Student Workbook + Exam Review
by Ruth E. McCall
- Price$198
- Rating4.6
- Reviews28
-
Phlebotomy Essentials, Enhanced Edition
by Ruth E. McCall
- Price$84.59
- Rating4.7
- Reviews701
-
Phlebotomy Essentials
by Ruth E. McCall
- Price$59.99
- Rating4.7
- Reviews502
-
Phlebotomy Essentials
by Ruth E. McCall
- Price$38.55
- Rating4.6
- Reviews932
-
Phlebotomy Exam Review
by Ruth E. McCall
- Price$51.46
- Rating4.8
- Reviews48
-
PHLEBOTOMY ESSENTIALS: .
by Ruth E. McCall
- Price$53.52
- Rating4.5
- Reviews493
-
PHLEBOTOMY ESSENTIALS 4E: .
by Ruth E. McCall
- Price$58.97
- Rating4.5
- Reviews115
Main categories
FAQ
How many books does Ruth E. McCall have on Amazon?
KDPTop tracks 19 of their books; 14 made an Amazon list in the last 30 days.
Which categories does Ruth E. McCall publish in?
Their books chart most often in Laboratory Medicine, Diagnostics & Labs, Medical Assistants.
How does Ruth E. McCall price their books?
The median price is $56.25; half of the books cost $40.06–$84.35.
Has Ruth E. McCall released new books recently?
0 new books in the last 30 days.
About this data
Data comes from KDPTop's daily crawl of Amazon's public Best Sellers pages; medians use the latest list. The opportunity score (0–100, higher is easier to enter) combines the review barrier, the share of low-review books, list turnover, new-release share and price.